View Filing Data

Print Document View Excel Document

Document and Entity Information - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2019	Mar. 23, 2020	Jun. 28, 2019
Document and Entity Information
Entity Registrant Name	Mistras Group, Inc.
Entity Central Index Key	0001436126
Document Type	10-K
Document Period End Date	Dec. 31, 2019
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Shell Company	false
Entity Public Float			$ 255.7
Entity Common Stock, Shares Outstanding		29,035
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Entity Small Business	false
Entity Emerging Growth Company	false
Document Transition Report	false
Entity Interactive Data Current	Yes

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Current Assets
Cash and cash equivalents	$ 15,016	$ 25,544
Accounts receivable, net	135,997	148,324
Inventories	13,413	13,053
Prepaid expenses and other current assets	14,729	15,870
Total current assets	179,155	202,791
Property, plant and equipment, net	98,607	93,895
Intangible assets, net	109,537	111,395
Goodwill	282,410	279,259
Deferred income taxes	1,786	1,930
Other assets	48,383	4,767
Total Assets	719,878	694,037
Current Liabilities
Accounts payable	15,033	13,863
Accrued expenses and other current liabilities	81,389	73,895
Current portion of long-term debt	6,593	6,833
Current portion of finance lease obligations	4,131
Current portion of finance lease obligations		3,922
Income taxes payable	2,094	1,958
Total current liabilities	109,240	100,471
Long-term debt, net of current portion	248,120	283,787
Obligations under finance leases, net of current portion	13,043
Obligations under finance leases, net of current portion		9,075
Deferred income taxes	21,290	23,148
Other long-term liabilities	42,163	6,482
Total Liabilities	433,856	422,963
Commitments and contingencies
Equity
Preferred stock, 10,000,000 shares authorized	0	0
Common stock, $0.01 par value, 200,000,000 shares authorized, 28,945,472 and 28,562,608 shares issued	289	285
Additional paid-in capital	229,205	226,616
Retained earnings	77,613	71,553
Accumulated other comprehensive loss	(21,285)	(27,557)
Total Mistras Group, Inc. stockholders’ equity	285,822	270,897
Non-controlling interests	200	177
Total Equity	286,022	271,074
Total Liabilities and Equity	$ 719,878	$ 694,037

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	200,000,000	200,000,000
Common stock, shares issued (in shares)	28,945,472	28,562,608

Consolidated Statements of Income (Loss) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Statement [Abstract]
Revenue	$ 748,586	$ 742,354	$ 700,970
Cost of revenue	509,489	512,024	492,238
Depreciation	21,800	22,456	21,020
Gross profit	217,297	207,874	187,712
Selling, general and administrative expenses	168,621	165,702	151,825
Bad debt provision for troubled customers, net of recoveries	3,038	650	1,200
Impairment charges	0	0	15,810
Pension withdrawal expense	848	5,886	0
Gain on sale of subsidiary	0	(2,384)	0
Research and engineering	3,045	3,310	2,272
Depreciation and amortization	16,733	11,957	10,363
Acquisition-related expense, net	875	532	482
Litigation charges	0	0	1,600
Income from operations	24,137	22,221	4,160
Interest expense	13,698	7,950	4,386
Income (loss) before provision for income taxes	10,439	14,271	(226)
Provision for income taxes	4,359	7,426	1,942
Net income (loss)	6,080	6,845	(2,168)
Less: net income attributable to noncontrolling interests, net of taxes	20	9	7
Net income (loss) attributable to Mistras Group, Inc.	$ 6,060	$ 6,836	$ (2,175)
Earnings (loss) per common share
Basic (in dollars per share)	$ 0.21	$ 0.24	$ (0.08)
Diluted (in dollars per share)	$ 0.21	$ 0.23	$ (0.08)
Weighted average common shares outstanding:
Basic (in shares)	28,740	28,406	28,422
Diluted (in shares)	29,046	29,427	28,422

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 6,080	$ 6,845	$ (2,168)
Other comprehensive income (loss):
Foreign currency translation adjustments	6,272	(10,752)	12,919
Comprehensive income (loss)	12,352	(3,907)	10,751
Less: net income attributable to noncontrolling interests	20	9	7
Foreign currency translation adjustments attributable to noncontrolling interests	3	(5)	4
Comprehensive income (loss) attributable to Mistras Group, Inc.	$ 12,335	$ (3,921)	$ 10,748

- Definition

The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 1A
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669619-108580

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 1B
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669625-108580

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 6: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 55
-Paragraph 4J
-URI http://asc.fasb.org/extlink&oid=116874947&loc=SL4591551-111686

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3000-108585

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 45
-Paragraph 19
-URI http://asc.fasb.org/extlink&oid=108774443&loc=SL4569616-111683

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599

Reference 10: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 55
-Paragraph 4K
-URI http://asc.fasb.org/extlink&oid=116874947&loc=SL4591552-111686

+ Details

Consolidated Statements of Equity - USD ($) shares in Thousands, $ in Thousands	Total	Total Mistras Group, Inc. Stockholders’ Equity	Common Stock	Treasury Stock	Additional paid-in capital	Retained earnings	Accumulated other comprehensive income (loss)	Noncontrolling Interest
Beginning Balance (in shares) at Dec. 31, 2016			29,217	420
Beginning Balance at Dec. 31, 2016	$ 270,744	$ 270,582	$ 292	$ (9,000)	$ 217,211	$ 91,803	$ (29,724)	$ 162
Increase (Decrease) in Stockholders' Equity
Net income (loss)	(2,168)	(2,175)				(2,175)		7
Other comprehensive income, net of tax	12,923	12,919					12,919	4
Share-based payments	6,588	6,588			6,588
Net settlement on vesting of restricted stock units (in shares)			187
Net settlement on vesting of restricted stock units	(1,647)	(1,647)	$ 2		(1,649)
Retirement of treasury stock (in shares)			1,146	1,146
Retirement of treasury stock	0		$ (12)	$ 24,923		(24,911)
Purchase of treasury stock (in shares)				(726)
Purchase of treasury stock	$ (15,923)	(15,923)		$ (15,923)
Exercise of stock options (in shares)	37		37
Exercise of stock options	$ 275	275			275
Ending Balance (in shares) at Dec. 31, 2017			28,295	0
Ending Balance at Dec. 31, 2017	270,792	270,619	$ 282	$ 0	222,425	64,717	(16,805)	173
Increase (Decrease) in Stockholders' Equity
Net income (loss)	6,845	6,836				6,836		9
Other comprehensive income, net of tax	(10,757)	(10,752)					(10,752)	(5)
Share-based payments (in shares)			243
Share-based payments	6,109	6,109	$ 3		6,106
Net settlement on vesting of restricted stock units	$ (2,188)	(2,188)			(2,188)
Exercise of stock options (in shares)	25		25
Exercise of stock options	$ 273	273			273
Ending Balance (in shares) at Dec. 31, 2018			28,563	0
Ending Balance at Dec. 31, 2018	271,074	270,897	$ 285	$ 0	226,616	71,553	(27,557)	177
Increase (Decrease) in Stockholders' Equity
Net income (loss)	6,080	6,060				6,060		20
Other comprehensive income, net of tax	6,275	6,272					6,272	3
Share-based payments (in shares)			30
Share-based payments	5,759	5,759	$ 4		5,759
Net settlement on vesting of restricted stock units (in shares)			349
Net settlement on vesting of restricted stock units	$ (3,198)	(3,198)			(3,202)
Exercise of stock options (in shares)	2,093		3
Exercise of stock options	$ 32	32			32
Ending Balance (in shares) at Dec. 31, 2019			28,945	0
Ending Balance at Dec. 31, 2019	$ 286,022	$ 285,822	$ 289	$ 0	$ 229,205	$ 77,613	$ (21,285)	$ 200

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities
Net income (loss)	$ 6,080	$ 6,845	$ (2,168)
Adjustments to reconcile net income (loss) to net cash provided by operating activities
Depreciation and amortization	38,533	34,413	31,383
Deferred income taxes	(3,599)	1,859	(4,854)
Share-based compensation expense	5,766	6,107	6,574
Impairment charges	0	0	15,810
Bad debt provision for troubled customers, net of recoveries	3,038	650	1,200
Foreign currency (gain) loss	(535)	1,311	604
Gain on sale of subsidiary	0	(2,384)	0
Fair value adjustments to contingent consideration	511	(716)	(463)
Other	1,804	462	(525)
Changes in operating assets and liabilities, net of effect of acquisitions
Accounts receivable	8,298	(10,349)	2,490
Inventories	(302)	(2,764)	(117)
Prepaid expenses and other assets	3,289	1,400	(1,904)
Accounts payable	1,138	2,948	2,574
Accrued expenses and other liabilities	(5,042)	5,663	4,188
Income taxes payable	131	(3,781)	1,007
Net cash provided by operating activities	59,110	41,664	55,799
Cash flows from investing activities
Purchase of property, plant and equipment	(22,047)	(20,584)	(19,314)
Purchase of intangible assets	(873)	(541)	(1,255)
Disposition of business	0	4,239	0
Acquisition of businesses, net of cash acquired	(4,228)	(139,980)	(83,424)
Proceeds from sale of equipment	1,868	1,416	1,196
Net cash used in investing activities	(25,280)	(155,450)	(102,797)
Cash flows from financing activities
Repayment of finance lease obligations	(4,545)	(5,813)	(6,492)
Proceeds from borrowings of long-term debt	983	2,358	6,653
Repayment of long-term debt	(6,857)	(2,746)	(2,101)
Proceeds from revolver	32,000	175,176	124,000
Repayments of revolver	(61,700)	(49,991)	(50,600)
Payments of debt issuance costs	0	(826)	(560)
Payment of contingent consideration for business acquisitions	(852)	(2,277)	(560)
Purchases of treasury stock	0	0	(15,923)
Taxes paid related to net share settlement of share-based awards	(3,198)	(2,185)	(1,647)
Proceeds from the exercise of stock options	32	273	275
Net cash provided by (used in) financing activities	(44,137)	113,969	53,045
Effect of exchange rate changes on cash and cash equivalents	(221)	(2,180)	2,340
Net change in cash and cash equivalents	(10,528)	(1,997)	8,387
Cash and cash equivalents:
Beginning of period	25,544	27,541	19,154
End of period	15,016	25,544	27,541
Supplemental disclosure of cash paid
Interest	14,158	7,751	4,264
Income taxes	6,096	10,983	3,063
Noncash investing and financing
Equipment acquired through finance lease obligations	$ 9,502	$ 4,845	$ 3,185

Summary of Significant Accounting Policies and Practices	12 Months Ended
	Dec. 31, 2019
Accounting Policies [Abstract]
Summary of Significant Accounting Policies and Practices	Summary of Significant Accounting Policies and Practices Description of Business Mistras Group, Inc. and subsidiaries (the Company) is a leading “one source” global provider of technology-enabled asset protection solutions used to evaluate the structural integrity and reliability of critical energy, industrial, public infrastructure and commercial aerospace components. The Company combines industry-leading products and technologies, expertise in mechanical integrity (MI), non-destructive testing (NDT) and mechanical services and proprietary data analysis software to deliver a comprehensive portfolio of customized solutions, ranging from routine inspections to complex, plant-wide asset integrity assessments and management. These mission critical solutions enhance customers’ ability to extend the useful life of their assets, increase productivity, minimize repair costs, comply with governmental safety and environmental regulations, manage risk and avoid catastrophic disasters. The Company serves a global customer base of companies with asset-intensive infrastructure, including companies in the oil and gas, commercial aerospace and defense, fossil and nuclear power, alternative and renewable energy, public infrastructure, chemicals, transportation, primary metals and metalworking, pharmaceutical/biotechnology and food processing industries, and research and engineering institutions. Principles of Consolidation The accompanying audited consolidated financial statements include the accounts of Mistras Group, Inc. and its wholly and majority-owned subsidiaries. For subsidiaries in which the Company’s ownership interest is less than 100%, the non-controlling interests are reported in stockholders’ equity in the accompanying consolidated balance sheets. The non-controlling interests in net income, net of tax, is classified separately in the accompanying consolidated statements of income (loss). All significant intercompany accounts and transactions have been eliminated in consolidation. Reclassifications Certain amounts in prior periods have been reclassified to conform to the current year presentation. Such reclassifications did not have a material effect on the Company's financial condition or results of operations as previously reported. Use of Estimates The preparation of financial statements in accordance with U.S. generally accepted accounting principles (GAAP) requires that the Company make estimates and assumptions that affect the reported amounts of assets, liabilities, revenue and expenses and disclosure of contingent assets and liabilities at the date of financial statements. The Company bases its estimates and assumptions on historical experience, known or expected trends and various other assumptions that it believes to be reasonable. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates, which may cause the Company’s future results to be significantly affected. Cash and Cash Equivalents The Company considers all highly liquid investments purchased with an original maturity of three months or less to be cash equivalents. Accounts Receivable Accounts receivable are stated net of an allowance for doubtful accounts and sales allowances. Outstanding accounts receivable balances are reviewed periodically, and allowances are provided at such time that management believes it is probable that such balances will not be collected within a reasonable period of time, to the extent reasonably estimable. The Company extends credit to its customers based upon credit evaluations in the normal course of business, primarily with 30-day terms. Bad debts are provided for based on historical experience and management’s evaluation of outstanding accounts receivable. Accounts are written off when they are deemed uncollectible under GAAP accounting standards. Concentration of Credit Risk For each of the years ended December 31, 2019 and 2018, no customer represented 10% or more of the Company's revenue. One customer represented 11% of the Company's revenue for the year ended December 31, 2017, which was primarily generated from the Services segment. Financial instruments that potentially subject the Company to concentrations of credit risk consist principally of cash and cash equivalents and accounts receivable. At times, cash deposits may exceed the limits insured by the Federal Deposit Insurance Corporation. The Company believes it is not exposed to any significant credit risk or risk of nonperformance of financial institutions. Inventories Inventories are stated at the lower of cost or net realizable value, as determined by using the first-in, first-out method, or market. Work in process and finished goods inventory include material, direct labor, variable costs and overhead. Purchased and Internal-Use Software The Company capitalizes certain costs that are incurred to purchase or to create and implement internal-use software, which includes software coding, installation and testing. Capitalized costs are amortized on a straight-line basis over three years, the estimated useful life of the software. Property, Plant and Equipment Property, plant and equipment are recorded at cost. Depreciation of property, plant and equipment is computed utilizing the straight-line method over the estimated useful lives of the assets. Amortization of leasehold improvements is computed utilizing the straight-line method over the shorter of the remaining lease term or estimated useful life. Repairs and maintenance costs are expensed as incurred. Goodwill Goodwill represents the excess purchase price of acquired businesses over the fair values attributed to underlying net tangible assets and identifiable intangible assets. The Company tests goodwill for impairment at a “reporting unit” level (which for the Company is represented by (i) our Services segment, (ii) our Products and Systems segment, and (iii) the European component of our International segment and (iv) the Brazilian component of our International segment). Our annual impairment test is conducted on the first day of our fourth quarter, which is October 1. Goodwill is also tested for impairment whenever an event occurs or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying amount. If the fair value of a reporting unit is less than its carrying value, this is an indicator that the goodwill assigned to that reporting unit may be impaired. As a result of the Company adopting Accounting Standards Update ("ASU") No. 2017-04, Intangibles-Goodwill and Other (Topic 350), impairment will be recorded in the amount that fair value is less than carrying value, as the ASU eliminated step two of the goodwill impairment process. The Company considers the income and market approaches to estimating the fair value of our reporting units, which requires significant judgment in evaluation of economic and industry trends, estimated future cash flows, discount rates and other factors. Impairment of Long-lived Assets The Company reviews the recoverability of its long-lived assets (or asset groups) whenever events or changes in circumstances indicate that the carrying amount of the long-lived asset (group) might not be recoverable. The assessment for potential impairment is based primarily on the Company’s ability to recover the carrying value of its long-lived assets from expected future undiscounted cash flows. If the total expected future undiscounted cash flows are less than the carrying amount of the assets, a loss is recognized for the difference between fair value (computed based upon the expected future discounted cash flows) and the carrying value of the assets. Acquisitions The Company allocates the purchase price of acquired businesses to their identifiable tangible assets and liabilities as well as identifiable intangible assets, such as customer relationships, technology, non-compete agreements and trade names. Certain estimates and judgments are required in the application of the fair value techniques, including estimates of the respective acquisition's future performance and related cash flows, selection of a discount rate and economic lives, and use of Level 3 measurements as defined in ASC No. 820, Fair Value Measurements and Disclosure. Deferred taxes are recorded for any differences between the assigned values and tax bases of assets and liabilities. Research and Engineering Research and product development costs are expensed as incurred. Advertising, Promotions and Marketing The costs for advertising, promotion and marketing programs are expensed as incurred and are included in selling, general and administrative expenses. Advertising expense was approximately $2.1 million, $2.1 million and $1.9 million for the years ended December 31, 2019, 2018 and 2017, respectively. Fair Value of Financial Instruments The carrying amounts of cash and cash equivalents, accounts receivable, accounts payable and other financial current assets and liabilities approximate fair value based on the short-term nature of the items. Foreign Currency Translation The financial position and results of operations of the Company’s foreign subsidiaries are measured using their functional currencies, which are their local currencies. Assets and liabilities of foreign subsidiaries are translated into the U.S. Dollar at the exchange rates in effect at the balance sheet date. Income and expenses are translated at the average exchange rate during the period. Translation gains and losses are reported as a component of other comprehensive (loss) income for the period and included in accumulated other comprehensive (loss) income within stockholders’ equity. Foreign currency (gains) and losses arising from transactions denominated in currencies other than the functional currency are included in net income, reported in selling, general and administrative expenses, and were approximately $(0.5) million, $1.3 million, and $0.6 million for the years ended December 31, 2019, 2018 and 2017, respectively. Self-Insurance The Company is self-insured for certain losses relating to workers’ compensation and health benefit claims. The Company maintains third-party excess insurance coverage for all workers' compensation and health benefit claims in excess of approximately $0.3 million per occurrence to reduce its exposure from such claims. Self-insured losses are accrued when it is probable that an uninsured claim has been incurred but not reported and the amount of the loss can be reasonably estimated at the balance sheet date. Share-based Compensation The value of services received from employees and directors in exchange for an award of an equity instrument is measured based on the grant-date fair value of the award. Such value is recognized as a non-cash expense on a straight-line basis over the period the individual provides services, which is typically the vesting period of the award with the exception of awards with graded vesting that contain an internal performance measure where each tranche is recognized on a straight-line basis over its vesting period subject to the probability of meeting the performance requirements and adjusted for the number of shares expected to be earned. As share-based compensation expense is based on awards ultimately expected to vest, the amount of expense is reduced for estimated forfeitures. The cost of these awards is recorded in selling, general and administrative expense in the Company’s consolidated statements of income. Income Taxes Income taxes are accounted for under the asset and liability method. Deferred income tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and tax credit carry-forwards. Deferred income tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred income tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. A valuation allowance is provided if it is more likely than not that some or all of a deferred income tax asset will not be realized. Financial accounting standards prescribe a minimum recognition threshold a tax position is required to meet before being recognized in the financial statements. These standards also provide guidance on de-recognition, measurement, and classification of amounts relating to uncertain tax positions, accounting for and disclosure of interest and penalties, accounting in interim periods and disclosures required. Interest and penalties related to unrecognized tax positions are recognized as incurred within “provision for income taxes” in the consolidated statements of income. Recent Accounting Pronouncements In February 2016, the Financial Accounting Standards Board ("FASB") issued ASU No. 2016-02, Leases (Topic 842), which the Company adopted as of January 1, 2019. Topic 842 requires the recognition of lease rights and obligations as assets and liabilities on the balance sheet. The Company elected the modified retrospective method permitted by the standard, upon which prior-period information has not been restated. The standard provided for several practical expedient options for use in transition. The Company elected to utilize the “package of practical expedients,” which permits the Company not to reassess previous conclusions reached on lease identification, lease classification and initial direct costs. The Company also elected to utilize the practical expedient available to not separate lease and non-lease components within the lease and has therefore accounted for all lease components as a single lease component. Adoption of the new standard resulted in the recording of a right-of-use (ROU) asset and liability related to the Company’s operating leases of approximately $38 million as of January 1, 2019. The new standard did not have a material impact to our statements of income or cash flows. In January 2017, the FASB issued ASU No. 2017-04, Intangibles-Goodwill and Other (Topic 350). This amendment eliminates Step Two of the goodwill impairment test. Under the amendments in this update, entities should perform the annual goodwill impairment test by comparing the carrying value of their reporting units to their fair value. An entity should record an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value. Tax deductibility of goodwill should be considered in evaluating any reporting unit's impairment loss to be taken. ASU 2017-04 is effective for fiscal years beginning after December 15, 2019, with early adoption permitted. The Company early adopted ASU 2017-04 in the third quarter of 2017 for its consolidated financial statements and related disclosures. In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes (“ASU 2019-12”). ASU 2019-12 simplifies the accounting for income taxes by eliminating certain exceptions related to the approach for intraperiod tax allocation, the methodology for calculating income taxes in an interim period, and the recognition of deferred tax liabilities related to outside basis differences. The standard is effective for interim and annual periods beginning January 1, 2021, with certain amendments applied prospectively and others requiring retrospective application. Early adoption is permitted, with any adjustments reflected as of the beginning of the fiscal year of adoption. If early adoption is elected, all changes as a result of the standard must be adopted in the same period. The Company is currently evaluating the impact of this guidance on its consolidated financial position, results of operations, and cash flows.

Revenue

12 Months Ended

Dec. 31, 2019

Revenue from Contract with Customer [Abstract]

Revenue

The majority of the Company's revenues are derived from providing services on a time and material basis and are short-term in

nature.

Performance Obligations

A performance obligation is a promise in a contract to transfer a distinct good or service to the customer, and is the unit of account in ASC Topic 606. A contract’s transaction price is allocated to each distinct performance obligation and recognized as revenue when, or as, the performance obligation is satisfied. The majority of our contracts have a single performance obligation as the promise to transfer the individual goods or services is not separately identifiable from other promises in the contracts and is, therefore, not distinct. The Company provides highly integrated and bundled inspection services to its customers. Some of our contracts have multiple performance obligations, most commonly due to the contract providing both goods and services.

For contracts with multiple performance obligations, the Company allocates the contract’s transaction price to each performance obligation using our best estimate of the standalone selling price of each distinct good or service in the contract. The primary method used to estimate standalone selling price is a relative selling price based on price lists.

Contract modifications are not routine in the performance of our contracts. Generally, when contracts are modified, the modification is to account for changes in scope to the goods and services that are provided. In most instances, contract modifications are for goods or services that are distinct, and, therefore, are accounted for as a separate contract.

Our performance obligations are satisfied over time as work progresses or at a point in time. The majority of our revenue recognized over time as work progresses is related to our service deliverables, which includes providing testing, inspection and mechanical services to our customers. Revenue is recognized over time based on time and material incurred to date which best portrays the transfer of control to the customer. The Company also utilizes an available practical expedient that provides for revenue to be recognized in an amount that corresponds directly with the value to the customer of the entity’s performance completed to date. Fixed fee arrangements are determined based on expected labor, material, and overhead to be consumed on fulfillment of such services. Revenue is recognized on a cost-to-cost method tracked on an input basis.

The majority of our revenue recognized at a point in time is related to product sales when the customer obtains control of the asset, which is generally upon shipment to the customer. Contract costs include labor, material and overhead.

The Company expects any significant remaining performance obligations to be satisfied within one year.

Contract Estimates

The majority of our revenues are short-term in nature. The Company has many Master Service Agreements (MSAs) that specify an overall framework and terms of contract when the Company and customers agree upon services or products to be provided. The actual contracting to provide services or furnish products are triggered by a work order, purchase order, or some similar document issued pursuant to a MSA which sets forth the scope of services and/or identifies the products to be provided. From time-to-time, the Company may enter into long-term contracts, which can range from several months to several years. Revenue on such long-term contracts is recognized as work is performed based on total costs incurred to date in relation to the total estimated costs for the performance of the contract at completion. This includes contract estimates of costs to be incurred for the performance of the contract. Cost estimation is based upon the professional knowledge and experience of our project managers, engineers and financial professionals. Factors that are considered in estimating the work to be completed include the availability of materials, the effect of any delays in our project performance and the recoverability of any claims. Whenever revisions of estimates, contract costs and/or contract values indicate that the contract costs will exceed estimated revenues, thus creating a loss, a provision for the total estimated loss is recorded in that period.

Revenue by category

The following series of tables present our disaggregated revenues:

Revenue by industry was as follows:


Year ended December 31, 2019	Services		International		Products & Systems		Corp/Elim		Total
Oil & Gas	$	390,815	$	44,447	$	756	$	—	$	436,018
Aerospace & Defense	51,390		41,224		1,237		—		93,851
Industrials	64,622		21,405		3,187		—		89,214
Power generation & Transmission	30,300		10,289		2,726		—		43,315
Other Process Industries	28,495		10,196		418		—		39,109
Infrastructure, Research & Engineering	14,269		9,520		9,316		—		33,105
Other	15,239		7,190		943		(9,398)		13,974
Total	$	595,130	$	144,271	$	18,583	$	(9,398)	$	748,586


Year ended December 31, 2018	Services		International		Products & Systems		Corp/Elim		Total
Oil & Gas	$	378,904	$	37,953	$	1,255	$	—	$	418,112
Aerospace & Defense	50,500		54,853		2,355		—		107,708
Industrials	60,594		26,209		3,097		—		89,900
Power generation & Transmission	30,687		8,522		4,904		—		44,113
Other Process Industries	26,425		9,497		124		—		36,046
Infrastructure, Research & Engineering	11,283		9,032		5,246		—		25,561
Other	16,226		7,382		6,445		(9,139)		20,914
Total	$	574,619	$	153,448	$	23,426	$	(9,139)	$	742,354

Revenue per key geographic location was as follows:


Year ended December 31, 2019	Services		International		Products & Systems		Corp/Elim		Total
United States	$	487,408	$	631	$	12,011	$	(4,918)	$	495,132
Other Americas	104,081		7,659		407		(407)		111,740
Europe	2,342		127,581		1,940		(3,978)		127,885
Asia-Pacific	1,299		8,400		4,225		(95)		13,829
Total	$	595,130	$	144,271	$	18,583	$	(9,398)	$	748,586


Year ended December 31, 2018	Services		International		Products & Systems		Corp/Elim		Total
United States	$	478,853	$	568	$	11,493	$	(3,500)	$	487,414
Other Americas	90,823		7,995		1,068		(1,638)		98,248
Europe	4,252		138,948		3,958		(3,846)		143,312
Asia-Pacific	691		5,937		6,907		(155)		13,380
Total	$	574,619	$	153,448	$	23,426	$	(9,139)	$	742,354

Contract Balances

The timing of revenue recognition, billings and cash collections results in billed accounts receivable, unbilled receivables (contract assets), and customer advances and deposits (contract liabilities) on the consolidated balance sheet. Amounts are generally billed as work progresses in accordance with agreed-upon contractual terms, generally at periodic intervals (e.g., weekly, bi-weekly or monthly). Generally, billing occurs subsequent to revenue recognition, resulting in contract assets. However, the Company sometimes receives advances or deposits from our customers before revenue is recognized, resulting in contract liabilities. These assets and liabilities are aggregated on an individual contract basis and reported on the consolidated balance sheet at the end of each reporting period within accounts receivables or accrued expenses and other current liabilities.

Revenue recognized for 2019 and 2018, that was included in the contract liability balance at the beginning of the year was $4.3 million and $5.3 million, respectively. Changes in the contract asset and liability balances during the years ended December 31, 2019 and 2018, were not impacted by any other factors. The Company applies the practical expedient to expense incremental costs incurred related to obtaining a contract when the asset that the Company otherwise would have recognized is one year or less.

Earnings per Share

12 Months Ended

Dec. 31, 2019

Earnings Per Share [Abstract]

Earnings per Share

Basic earnings per share is computed by dividing net income attributable to common stockholders by the weighted average number of shares outstanding during the period. Diluted earnings per share is computed by dividing net income attributable to common stockholders by the sum of (1) the weighted average number of shares of common stock outstanding during the period, and (2) the dilutive effect of assumed conversion of equity awards using the treasury stock method. With respect to the number of weighted average shares outstanding (denominator), diluted shares reflect: (i) only the exercise of options to acquire common

stock to the extent that the options’ exercise prices are less than the average market price of common shares during the period and (ii) the pro forma vesting of restricted stock units.

The following table sets forth the computations of basic and diluted earnings per share:


	For the year ended December 31,
	2019		2018		2017
Basic earnings (loss) per share:
Numerator:
Net income (loss) attributable to Mistras Group, Inc.	$	6,060	$	6,836	$	(2,175)
Denominator
Weighted average common shares outstanding	28,740		28,406		28,422
Basic earnings (loss) per share	$	0.21	$	0.24	$	(0.08)

Diluted earnings (loss) per share:
Numerator:
Net income (loss) attributable to Mistras Group, Inc.	$	6,060	$	6,836	$	(2,175)
Denominator
Weighted average common shares outstanding	28,740		28,406		28,422
Dilutive effect of stock options outstanding	98		683		—
Dilutive effect of restricted stock units outstanding	208		338		—
	29,046		29,427		28,422
Diluted earnings (loss) per share	$	0.21	$	0.23	$	(0.08)

The following potential common shares were excluded from the computation of diluted earnings per share, as the effect would have been anti-dilutive:


	For the year ended December 31,
	2019	2018	2017
Potential common stock attributable to restricted stock units (RSUs) and performance stock units (PSUs) outstanding ⁽¹⁾	42	1	353
Potential common stock attributable to stock options outstanding ⁽¹⁾	5	5	810
Total	47	6	1,163

⁽¹⁾ For the twelve months ended December 31, 2017, 805 and 351 shares related to stock options and RSUs/PSUs, respectively, were excluded from the calculation of diluted EPS due to the net loss for the period.

Accounts Receivable

12 Months Ended

Dec. 31, 2019

Receivables [Abstract]

Accounts Receivable

Accounts receivable consist of the following:


	December 31,
	2019		2018
Trade accounts receivable	$	144,282	$	152,511
Allowance for doubtful accounts	(8,285)		(4,187)
Accounts receivable, net	$	135,997	$	148,324

The Company had $22.2 million and $16.1 million of unbilled revenues accrued as of December 31, 2019 and December 31, 2018, respectively, which is included within the trade accounts receivable balance above. Unbilled revenues as of December 31, 2019 are expected to be billed in the first quarter of 2020.

In the fourth quarter of 2018, the Company recorded a reserve of $0.7 million for a renewable energy industry customer, based in part on the available information about the financial difficulties of the customer. This customer filed for a voluntary

insolvency proceeding on April 9, 2019 at which time payments under the previously agreed upon payment plan ceased. As a result, during the first quarter of 2019, the Company recorded an additional charge of $5.7 million to fully reserve for the amount of the exposure related to this customer. During the second quarter of 2019, the Company reversed $1.0 million of this reserve based on additional information obtained during the quarter. There were no changes during the third and fourth quarters of 2019.

During 2019, the Company sold to an unaffiliated third party, without recourse, its remaining outstanding receivables owed from a customer which filed for bankruptcy, and for which the Company had initially recorded a charge during the second quarter of 2017. During the first quarter of 2019, the Company recorded a recovery of $0.2 million and during the second quarter of 2019, the Company recorded a recovery $1.7 million, related to a bad debt provision for the receivables due from this customer. This matter is considered fully resolved.

The Company was contracted to perform inspections of welds on various pipeline projects in Texas for a customer. As of December 31, 2019, approximately $1.4 million of past due receivables were outstanding from this customer. The Company received notice from the customer in December 2019, alleging that the work performed was not in compliance with the contract. The Company filed a lawsuit to recover the $1.4 million and other amounts due to the Company and the customer filed a counterclaim, alleging breach of contract and seeking its damages. Accordingly, the Company recorded a full reserve in the amount of $1.4 million during 2019 for these past due receivables. See Note 18–Commitments and Contingencies for additional details.

Inventories

12 Months Ended

Dec. 31, 2019

Inventory Disclosure [Abstract]

Inventories

Inventories consist of the following:


	December 31,
	2019		2018
Raw materials	$	5,314	$	6,975
Work in progress	1,549		1,019
Finished goods	3,957		2,640
Consumable supplies	2,593		2,419
Inventories	$	13,413	$	13,053

Property, Plant and Equipment

12 Months Ended

Dec. 31, 2019

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

Property, plant and equipment consist of the following:


		December 31,
	Useful Life	2019		2018
	(Years)
Land		$	2,672	$	2,680
Building and improvements	30-40	24,537		24,338
Office furniture and equipment	5-8	17,227		16,170
Machinery and equipment	5-7	225,974		208,245
		270,410		251,433
Accumulated depreciation and amortization		(171,803)		(157,538)
Property, plant and equipment, net		$	98,607	$	93,895

Depreciation expense was approximately $24.2 million, $24.2 million, and $22.4 million for the years ended December 31, 2019, 2018 and 2017, respectively.

Acquisitions and Disposition

12 Months Ended

Dec. 31, 2019

Business Combinations [Abstract]

Acquisitions and Disposition

Acquisitions

During the year ended December 31, 2019, the Company completed one acquisition that provides pipeline integrity management software and services to energy transportation companies. The Company acquired all the equity interest of the acquiree in exchange for aggregate consideration of $4.4 million in cash, contingent consideration of up to $4.3 million to be earned based upon the acquired business achieving specific performance metrics over the initial three years of operations from the acquisition date and working capital adjustments. The goodwill recorded is primarily attributable to expected synergies and is generally fully deductible for tax purposes. The Company is still in the process of completing its valuation of the assets acquired and liabilities assumed.

The following table summarizes the estimated fair value of the assets acquired and liabilities assumed, the Company's allocation of purchase price and any subsequent adjustments made during the year ended December 31, 2019 for the 2019 acquisition:



	2019


Cash paid	$	4,380
Working capital adjustments	(152)

Fair value of contingent consideration	1,142
Total consideration	$	5,370

Current net assets	$	142
Other assets	34

Property, plant and equipment	65

Intangibles	3,594
Goodwill	1,535
Net assets acquired	$	5,370

The results of operations of the business acquired in September 2019 have been included in the Services segment within the Consolidated Statements of Income (Loss) from the transaction closing date and approximates $2.0 million of revenues and an operating loss of $0.4 million for the year ended December 31, 2019.

During the year ended December 31, 2018, the Company completed one acquisition that performs inline inspection services, with headquarters in Canada and a location in the U.S. The acquired company has been included in the Services segment and primarily provides services to the midstream area within the oil and gas industry. The Company acquired 100% of the equity interests of the acquiree's Canadian and U.S. entities in exchange for aggregate consideration of $143.1 million in cash. The goodwill recorded is primarily attributable to expected synergies and the assembled workforce and is not deductible for tax purposes. The Company has filed a claim with the seller and the Company's insurance carrier. See Note 18–Commitments and Contingencies to these consolidated financial statements for further discussion.

During 2019, the Company finalized valuations for of the assets acquired and liabilities assumed related to the 2018 acquisition and adjusted provisional amounts as follows:

•The Company increased the $59.6 million provisional fair value of intangibles by $4.8 million with a corresponding decrease to goodwill.

•The Company decreased the $8.5 million provisional fair value of property, plant and equipment by $0.7 million with a corresponding increase to goodwill.

•The Company increased the $5.0 million provisional fair value of debt and other liabilities by $0.4 million with a corresponding increase to goodwill.

•The Company increased the $12.7 million provisional fair value of the deferred tax liability by $1.4 million with a corresponding increase to goodwill.

The Company accounted for the acquisitions completed in 2019 and 2018 in accordance with the acquisition method of accounting for business combinations. Assets and liabilities of the acquired businesses were included in the consolidated balance sheet based on their respective estimated fair value on the date of acquisition as determined in a purchase price

allocation, using available information and making assumptions management believes are reasonable. The amortization period for the intangible assets acquired range from one to eighteen years.

Disposition

During the third quarter of 2018, substantially all of the assets and liabilities of a subsidiary in the Products and Systems segment were sold for approximately $4.3 million. For the year ended December 31, 2018, the Company recognized a gain of approximately $2.4 million related to the sale, which is reported as a Gain on sale of subsidiary on the Consolidated Statements of Income (Loss). The sale also included a three-year agreement to purchase products from the buyer, with a cumulative commitment of $2.3 million (see Note 18–Commitments and Contingencies).

Acquisition-Related expense

In the course of its acquisition activities, the Company incurs costs in connection with due diligence, professional fees, and other expenses. Additionally, the Company adjusts the fair value of acquisition-related contingent consideration liabilities on a quarterly basis. These amounts are recorded as acquisition-related expense, net, on the consolidated statements of income and were as follows for the years ended December 31, 2019, 2018 and 2017:


	For the year ended December 31,
	2019		2018		2017
Due diligence, professional fees and other transaction costs	$	364	$	1,248	$	945
Adjustments to fair value of contingent consideration liabilities	511		(716)		(463)
Acquisition-related expense, net	$	875	$	532	$	482

The Company’s contingent consideration liabilities are recorded on the Consolidated Balance Sheets in Accrued expenses and other current liabilities and Other long-term liabilities.

Goodwill

12 Months Ended

Dec. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill

The changes in the carrying amount of goodwill by segment is shown below:


	Services		International		Products and Systems		Total





Balance at December 31, 2017	$	165,801	$	37,637	$	—	$	203,438
Goodwill acquired during the year	83,163		—		—		83,163
Adjustments to preliminary purchase price allocations	(1,977)		—		—		(1,977)
Foreign currency translation	(3,511)		(1,854)		—		(5,365)
Balance at December 31, 2018	$	243,476	$	35,783	$	—	$	279,259
Goodwill acquired during the year	1,535		—		—		1,535
Adjustments to preliminary purchase price allocations	(2,332)		—		—		(2,332)
Foreign currency translation	4,536		(588)		—		3,948
Balance at December 31, 2019	$	247,215	$	35,195	$	—	$	282,410

The Company conducted its annual goodwill impairment test of its reporting units as of October 1, 2019 and concluded that there was no impairment. As of December 31, 2019, the Company did not identify any changes in circumstances that would indicate the remaining carrying value of goodwill may not be recoverable.

The Company's cumulative goodwill impairment as of December 31, 2019 and December 31, 2018 was $23.1 million, of which $13.2 million is related to the Products and Systems segment and $9.9 million is related to the International segment.

Intangible Assets

12 Months Ended

Dec. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

The gross carrying amount and accumulated amortization of intangible assets were as follows:


		December 31,
		2019										2018
	Useful Life (Years)	Gross Amount		Accumulated Amortization		Net Carrying Amount		Gross Amount		Accumulated Amortization		Net Carrying Amount
Customer relationships	5-18	$	113,861	$	(67,853)	$	46,008	$	112,624	$	(60,993)	$	51,631
Software/Technology	3-15	77,914		(18,756)		59,158		67,240		(13,319)		53,921
Covenants not to compete	2-5	12,795		(11,630)		1,165		12,593		(10,825)		1,768
Other	2-12	10,813		(7,607)		3,206		10,317		(6,242)		4,075
Total		$	215,383	$	(105,846)	$	109,537	$	202,774	$	(91,379)	$	111,395

Amortization expense for the years ended December 31, 2019, 2018 and 2017, was approximately $14.3 million, $10.2 million, and $9.0 million, respectively, including amortization of software/technology for these periods of $5.6 million, $1.4 million, and $1.2 million, respectively.

Amortization expense in each of the five years and thereafter subsequent to December 31, 2019 related to the Company’s intangible assets is expected to be as follows:


	Expected Amortization Expense
2020	$	13,864
2021	12,474
2022	12,042
2023	10,987
2024	9,870
Thereafter	50,300
Total	$	109,537

Accrued Expenses and Other Current Liabilities

12 Months Ended

Dec. 31, 2019

Payables and Accruals [Abstract]

Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consist of the following:


	December 31,
	2019		2018
Accrued salaries, wages and related employee benefits	$	30,072	$	29,959
Contingent consideration	2,614		1,687
Accrued workers' compensation and health benefits	4,467		5,086
Deferred revenues	5,860		5,046

Right-of-use liability - Operating	10,133		—
Pension accrual	2,519		5,585
Other accrued expenses	25,724		26,532
Total accrued expenses and other current liabilities	$	81,389	$	73,895

Long-Term Debt

12 Months Ended

Dec. 31, 2019

Debt Disclosure [Abstract]

Long-Term Debt

Long-term debt consists of the following:


	December 31,
	2019		2018
Senior credit facility	$	151,773	$	181,656
Senior secured term loan, net of debt issuance costs of $0.1 million	94,919		99,897
Notes payable	—		68
Other	8,021		8,999
Total debt	254,713		290,620
Less: Current portion	(6,593)		(6,833)
Long-term debt, net of current portion	$	248,120	$	283,787

Senior Credit Facility

The Company's revolving credit agreement with its banking group (“Credit Agreement”) provides the Company with a

$300 million revolving line of credit, which, under certain circumstances, can be increased to $450 million with the approval of the banks. In addition, the Credit Agreement provides the Company with a $100 million senior secured term loan A facility. Both the revolving line of credit and the term loan A facility under the Credit Agreement have a maturity date of December 12, 2023. The Company may borrow up to $100 million in non-U.S. Dollar currencies and use up to $20 million of the credit limit for the issuance of letters of credit. At December 31, 2019, the Company had borrowings of $246.7 million and letters of credit of $3.7 million were outstanding under the Credit Agreement. The Company had remaining capitalized costs of $0.8 million associated with debt modifications as of December 31, 2019, included in Other assets within the accompanying Consolidated Balance Sheets.

Loans under the Credit Agreement bear interest at the London Interbank Offered Rate ("LIBOR") plus an applicable LIBOR margin ranging from 1% to 2%, or a base rate less a margin of 1.25% to 0.375%, at the option of the Company, based upon the Company’s Funded Debt Leverage Ratio. Funded Debt Leverage Ratio is generally the ratio of (1) all outstanding indebtedness for borrowed money and other interest-bearing indebtedness as of the date of determination to (2) EBITDA (which is (a) net income, less (b) income (or plus loss) from discontinued operations and extraordinary items, plus (c) income tax expenses, plus (d) interest expense, plus (e) depreciation, depletion, and amortization (including non-cash loss on retirement of assets), plus (f) stock compensation expense, less (g) cash expense related to stock compensation, plus (h) certain amounts of EBITDA of acquired business for the prior twelve months, plus (i) certain expenses related to the closing of the Credit Agreement, plus (j) non-cash expenses which do not (in the current or any future period) represent a cash item (excluding non-cash gains which increase net income), plus (k) non-recurring charges (not to exceed $10 million in the four consecutive quarters immediately preceding the date of determination) for items such as severance, lease termination charges, asset write-offs and litigation settlements paid, and multi-employer pension plan withdrawal liabilities, all determined for the period of four consecutive fiscal quarters immediately preceding the date of determination of EBITDA. The Company has the benefit of the lowest margin if its Funded Debt Leverage Ratio is equal to or less than 1.0 to 1, and the margin increases as the ratio increases, to the maximum margin if the ratio is greater than 3.25 to 1. The Company will also bear additional costs for market disruption, regulatory changes affecting the lenders’ funding costs, and default pricing of an additional 2% interest rate margin on any amounts not paid when due. Amounts borrowed under the Credit Agreement are secured by liens on substantially all of the assets of the Company and is guaranteed by some of our subsidiaries.

The Credit Agreement contains financial covenants requiring that the Company maintain a Funded Debt Leverage Ratio of no greater than 4.25 to 1 through December 31, 2018, reducing to a maximum permitted ratio of 3.50 to 1 as of March 31, 2020 and all quarterly periods thereafter, and a Fixed Charge Coverage Ratio of at least 1.25 to 1. Fixed Charge Coverage Ratio means the ratio, as of any date of determination, of (a) (i) EBITDA for the 12 month period immediately preceding the date of determination, taken together as one accounting period, less (ii) the aggregate amount of all capital expenditures made during the period, less (iii) taxes paid in cash during the period, less (iv) Restricted Payments (as defined in the Credit Agreement) paid in cash during the period, -to- (b) the sum of (i) all interest, premium payments, debt discount, fees, charges and related expenses of us and our subsidiaries in connection with borrowed money (including capitalized interest) or in connection with the deferred purchase price of assets, in each case, to the extent treated as interest in accordance with GAAP and to the extent paid in cash during the period, (ii) the aggregate principal amount of all redemptions or similar acquisitions for value of outstanding debt for borrowed money or regularly scheduled principal payments made during the period, but excluding any such payments to the extent refinanced through the incurrence of additional Indebtedness otherwise expressly permitted under

the Credit Agreement, and (iii) payments made during the period under all leases that have been or should be, in accordance with GAAP as in effect for the Company's 2017 audited financial statement, recorded as capitalized leases. Beginning in 2020, the Company can elect to increase the maximum Funded Debt Leverage Ratio to 4.0 to 1 for four fiscal quarters immediately following the fiscal quarter in which the Company acquires another business, with the maximum permitted ratio reducing back to 3.5 to 1 in the fifth fiscal quarter following such acquisition. The Company can make this election twice during the term of the Credit Agreement.

The Credit Agreement also limits the Company’s ability to, among other things, create liens, make investments, incur more indebtedness, merge or consolidate, make dispositions of property, pay dividends and make distributions to stockholders or repurchase our stock, enter into a new line of business, enter into transactions with affiliates and enter into burdensome agreements. The Credit Agreement does not limit the Company’s ability to acquire other businesses or companies except that the acquired business or company must be in the Company's line of business, the Company must be in compliance with the financial covenants on a pro forma basis after taking into account the acquisition, and, if the acquired business is a separate subsidiary, in certain circumstances the lenders will receive the benefit of a guaranty of the subsidiary and liens on its assets and a pledge of its stock.

As of December 31, 2019, the Company was in compliance with the terms of the Credit Agreement, and has undertaken to continuously monitor compliance with these covenants.

Subsequent Event

On March 9, 2020, the Credit Agreement was amended to provide that the maximum Funded Debt Leverage Ratio is 4.0 to 1 for the quarters ended December 31, 2019 through June 30, 2020; 3.75 to 1 for the quarter ending September 30, 2020; and 3.5 to 1 for the quarter ending December 31, 2020 and or each quarter end thereafter, and increased the maximum LIBOR margin from 2.0% to 2.25% if the Funded Debt Leverage Ratio exceeds 3.75 to 1. The amendment also requires that prior to the first time the Company makes an election to increase the Funded Debt Leverage Ratio to 4.0 to 1 in connection with an acquisition, the Company must obtain the consent of lenders (in their sole discretion) holding at least 66-2/3% of the credit exposure under the Credit Agreement.

The March 9, 2020 amendment to the Credit Agreement also provides that for acquisitions completed prior to April 1, 2021, (a) the aggregate consideration for all acquisitions made on or after March 9, 2020 and prior to April 1, 2021 shall not exceed $5,000,000, and (b) prior to the first of any such acquisition, the Company shall have demonstrated a Funded Debt Leverage Ratio of not greater than 3.0 to 1.0 for two consecutive fiscal quarters immediately prior to such acquisition.

Notes Payable and Other Debt

The Company's other debt includes local bank financing provided at the local subsidiary levels used to support working capital requirements and fund capital expenditures. At December 31, 2019, there was approximately $8.0 million outstanding, payable at various times through 2029. Monthly payments range from $1 thousand to $18 thousand. Interest rates range from 0.4% to 6.2%.

Scheduled principal payments due under all borrowing agreements in each of the five years and thereafter subsequent to December 31, 2019 are as follows:


2020	$	6,593
2021	8,864
2022	11,210
2023	225,343
2024	890
Thereafter	1,813
Total	$	254,713

Fair Value Measurements

12 Months Ended

Dec. 31, 2019

Fair Value Disclosures [Abstract]

Fair Value Measurements

The Company performs fair value measurements in accordance with the guidance provided by ASC 820, Fair Value Measurements and Disclosures. ASC 820 defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. It also establishes a three level hierarchy that prioritizes the inputs used to measure fair value. The three levels of the hierarchy are defined as follows:

Level 1 — Inputs are unadjusted quoted prices in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date.

Level 2 — Observable inputs other than quoted prices included in Level 1, including quoted prices for similar assets or liabilities in active markets, quoted prices for identical assets or liabilities in inactive markets, inputs other than quoted prices that are observable for the asset or liability and inputs derived principally from or corroborated by observable market data.

Level 3 — Unobservable inputs reflecting the Company’s own assumptions about inputs that market participants would use in pricing the asset or liability based on the best information available.

Financial instruments measured at fair value on a recurring basis

The fair value of contingent consideration liabilities was estimated using a discounted cash flow technique with significant inputs that are not observable in the market and thus represents a Level 3 fair value measurement as defined in ASC 820. The significant inputs in the Level 3 measurement not supported by market activity include the probability assessments of expected future cash flows related to the acquisitions, appropriately discounted considering the uncertainties associated with the obligation, and as calculated in accordance with the terms of the applicable acquisition agreements.

The following table represents the changes in the fair value of Level 3 contingent consideration:


Balance at December 31, 2017	$	5,508
Acquisitions	—
Payments	(2,277)
Accretion of liability	175
Revaluation	(891)
Foreign currency translation	(150)
Balance at December 31, 2018	$	2,365
Acquisitions	1,142
Payments	(852)
Accretion of liability	92
Revaluation	419
Foreign currency translation	50
Balance at December 31, 2019	$	3,216

Financial instruments not measured at fair value on a recurring basis

The Company has evaluated current market conditions and borrower credit quality and has determined that the carrying value of its long-term debt approximates fair value. The fair value of the Company’s notes payable and finance and operating lease obligations approximates their carrying amounts based on anticipated interest rates which management believes would currently be available to the Company for similar issuances of debt.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Share-Based Compensation

12 Months Ended

Dec. 31, 2019

Share-based Payment Arrangement [Abstract]

Share-Based Compensation

The Company has share-based incentive awards outstanding to its eligible employees and directors under two employee stock ownership plans: (i) the 2009 Long-Term Incentive Plan (the "2009 Plan") and (ii) the 2016 Long-Term Incentive Plan (the "2016 Plan"). No further awards may be granted under the 2009 Plan, although awards granted under the 2009 Plan remain outstanding in accordance with their terms. Awards granted under the 2016 Plan may be in the form of stock options, restricted stock units and other forms of share-based incentives, including performance restricted stock units, stock appreciation rights and deferred stock rights. The 2016 Plan allows for the grant of awards of up to approximately 1,700,000 shares of common stock, of which 718,000 shares were available for future grants as of December 31, 2019. As of December 31, 2019, there was

an aggregate of approximately 5,000 stock options outstanding and approximately 101,000 unvested restricted stock units outstanding under the 2009 Plan.

Stock Options

For the years ended December 31, 2019, 2018 and 2017, the Company did not have any share-based compensation expense related to stock option awards. No stock options were granted during the years ended December 31, 2019, 2018 and 2017. As of December 31, 2019, no unrecognized compensation costs remained related to stock option awards. Cash proceeds from, and the intrinsic value of, stock options exercised during the years ended December 31, 2019, 2018 and 2017 were as follows (in thousands):


	For the year ended December 31,
	2019 ¹		2018		2017
Cash proceeds from options exercised	$	32	$	273	$	275
Aggregate intrinsic value of options exercised	$	4,530	$	277	$	580

____________________

¹ During 2019, 2.1 million stock options were net exercised, wherein the option holders surrendered a portion of the underlying stock option awards to pay the exercise price and required minimum tax withholding.

A summary of the stock option activity, weighted average exercise prices, and options outstanding and exercisable as of December 31, 2019, 2018 and 2017 is as follows (in thousands, except per share amounts and years):


	For the years ended December 31,
	2019				2018					2017
	Common Stock Options	Weighted Average Exercise Price		Common Stock Options	Weighted Average Exercise Price		Common Stock Options	Weighted Average Exercise Price
Outstanding at beginning of year:	2,105	$	13.47	2,130	$	13.43	2,167	$	13.33
Granted	—	$	—	—	$	—	—	$	—
Exercised	(2,093)	$	13.45	(25)	$	10.75	(37)	$	7.39
Expired or forfeited	(7)	$	10.00	—	$	—	—	$	—
Outstanding at end of year:	5	$	22.35	2,105	$	13.47	2,130	$	13.43


			December 31, 2019
			Options Outstanding					Options Exercisable
Exercise Price	Total Options Outstanding		Weighted Average Remaining Life (Years)	Weighted Average Exercise Price		Number Exercisable		Weighted Average Exercise Price
$22.35	5		2.2	$	22.35	5		$	22.35


Aggregate Intrinsic Value	$	—				$	—

Restricted Stock Unit Awards

Restricted Stock Units generally vest ratably on each of the first four anniversary dates of issuance. The Company recognized approximately $4.0 million, $4.2 million and $4.5 million of share-based compensation for the years ended December 31, 2019, 2018 and 2017, respectively, related to restricted stock unit awards. As of December 31, 2019, there were approximately $6.7 million of unrecognized compensation costs, net of estimated forfeitures, related to restricted stock unit awards, which are expected to be recognized over a remaining weighted average period of 2.4 years. Upon vesting, restricted stock units are generally net share-settled to cover the required minimum withholding tax and the remaining amount is converted into an equivalent number of shares of common stock.

A summary of the vesting activity of restricted stock unit awards, with the respective fair value of the awards, is as follows: (in thousands):


	For the year ended December 31,
	2019		2018		2017
Restricted stock awards vested	172		258		185
Fair value of awards vested	$	2,495	$	5,319	$	3,429

A summary of the fully-vested common stock the Company issued to its six non-employee directors, in connection with its non-employee director compensation plan, is as follows (in thousands):


	For the year ended December 31,
	2019		2018		2017
Awards issued	30		19		21
Grant date fair value of awards issued	$	450	$	400	$	438

A summary of the Company's outstanding, non-vested restricted share units is presented below (in thousands, except per share amounts):


	For the year ended December 31,
	2019				2018					2017
	Units	Weighted Average Grant-Date Fair Value		Units	Weighted Average Grant-Date Fair Value		Units	Weighted Average Grant-Date Fair Value
Outstanding at beginning of period:	443	$	20.55	532	$	21.05	569	$	20.81
Granted	339	$	14.04	211	$	19.20	183	$	21.26
Released	(172)	$	20.38	(258)	$	20.48	(185)	$	20.49
Forfeited	(51)	$	17.71	(42)	$	20.52	(35)	$	21.45
Outstanding at end of period:	559	$	16.92	443	$	20.55	532	$	21.05

Performance Restricted Stock Units

The Company maintains Performance Restricted Stock Units (PRSUs) that have been granted to select executives and senior officers whose ultimate payout is based on the Company’s performance over a one-year period based on three metrics, as defined: (1) Operating Income, (2) Adjusted EBITDAS (defined as net income attributable to MISTRAS Group, Inc. plus: interest expense, provision for income taxes, depreciation and amortization, share-based compensation expense and certain acquisition related costs (including transaction due diligence costs and adjustments to the fair value of contingent consideration) and (3) Revenue. There is a discretionary portion of the PRSUs based on individual performance, at the discretion of the Compensation Committee (Discretionary PRSUs). PRSUs and Discretionary PRSUs generally vest ratably on each of the first four anniversary dates upon completion of the performance period, for a total requisite service period of up to five years and have no dividend rights.

PRSUs are equity-classified and compensation costs are initially measured using the fair value of the underlying stock at the date of grant, assuming that the target performance conditions will be achieved. Cumulative compensation costs related to the PRSUs are subsequently adjusted for changes in the expected outcomes of the performance conditions.

Discretionary PRSUs are liability-classified and adjusted to fair value (with a corresponding adjustment to compensation expense) based upon the targeted number of shares to be awarded and the fair value of the underlying stock each reporting period until approved by the Compensation Committee, at which point they are classified as equity.

A summary of the Company's PRSU activity is presented below (in thousands, except per share amounts):


	For the year ended December 31,
	2019				2018					2017
	Units	Weighted Average Grant-Date Fair Value		Units	Weighted Average Grant-Date Fair Value		Units	Weighted Average Grant-Date Fair Value
Outstanding at beginning of period:	277	$	17.80	278	$	17.00	290	$	16.01
Granted	190	$	13.63	129	$	19.46	128	$	20.42
Performance condition adjustments, net	(106)	$	13.77	(50)	$	19.48	(68)	$	20.55
Released	(101)	$	17.19	(68)	$	16.03	(72)	$	15.82
Forfeited	—	$	—	(12)	$	16.16	—	$	—
Outstanding at end of period:	260	$	16.77	277	$	17.80	278	$	17.00

For the year ended December 31, 2019, 190,000 PRSUs were granted. There was a 103,000 unit reduction to these awards, which represents Company performance below target, during the year ended December 31, 2019. As of December 31, 2019, the aggregate liability related to 29,000 outstanding discretionary PRSUs was less than $0.1 million and is classified within Accrued expenses and other liabilities on the consolidated balance sheet.

For the year ended December 31, 2018, 129,000 PRSUs were granted. There was a 54,000 unit reduction to these awards, which represents Company performance below target, during the year ended December 31, 2018. As of December 31, 2018, the aggregate liability related to 22,000 outstanding discretionary PRSUs was less than $0.1 million and is classified within Accrued expenses and other liabilities on the consolidated balance sheet. The Compensation Committee approved these PRSUs during the first quarter of 2019, which further reduced these awards by 3,000 units. The discretionary portion of these awards were reclassified from a liability to equity on the consolidated balance sheet upon Compensation Committee approval.

For the year ended December 31, 2017, 128,000 PRSUs were granted. There was a 65,000 unit reduction to these awards, which represents Company performance below target, during the year ended December 31, 2017. The Compensation Committee approved these PRSUs in the first quarter of 2018, which increased them by 4,000 units. The discretionary portion of these awards were reclassified from a liability to equity on the consolidated balance sheet upon Compensation Committee approval.

Compensation expense related to all PRSUs described above was $1.3 million, $1.5 million, and $1.7 million for the years ended December 31, 2019, 2018 and 2017, respectively. At December 31, 2019, there was $1.7 million of total unrecognized compensation costs related to approximately 260,000 unvested performance restricted stock units. These costs are expected to be recognized over a weighted-average period of approximately 2.0 years.

For the years ended December 31, 2019, 2018 and 2017, the income tax benefit recognized on all share based compensation arrangements referenced above was approximately $2.1 million, $1.0 million, and $2.2 million, respectively.

Income Taxes

12 Months Ended

Dec. 31, 2019

Income Tax Disclosure [Abstract]

Income Taxes

Income before provision for income taxes is as follows:


	For the year ended December 31,
	2019		2018		2017
Income (loss) before provision for income taxes from:
U.S. operations	$	7,334	$	9,853	$	(7,303)
Foreign operations	3,105		4,418		7,077
Earnings (loss) before income taxes	$	10,439	$	14,271	$	(226)

The provision for income taxes consists of the following:


	For the year ended December 31,
	2019		2018		2017
Current
Federal	$	2,712	$	790	$	3,558
States and local	519		533		39
Foreign	4,572		3,824		3,131
Reserve for uncertain tax positions	99		337		71
Total current	7,902		5,484		6,799
Deferred
Federal	315		2,966		(3,857)
States and local	(32)		399		(810)
Foreign	(4,095)		(2,089)		(159)
Total deferred	(3,812)		1,276		(4,826)
Net change in valuation allowance	269		666		(31)
Net deferred	(3,543)		1,942		(4,857)
Provision for income taxes	$	4,359	$	7,426	$	1,942

The provision for income taxes differs from the amount computed by applying the statutory federal tax rate to income tax as follows:


	For the years ended December 31,
	2019						2018						2017
Federal tax at statutory rate	$	2,192	21.0	%	$	2,997	21.0	%	$	(79)	35.0	%
State taxes, net of federal benefit	377		3.6	%	737		5.1	%	(502)		221.6	%
Foreign tax	982		9.4	%	807		5.7	%	217		(95.8)	%
Contingent consideration	29		0.3	%	(6)		—	%	(63)		27.7	%
Nondeductible compensation	1,581		15.2	%	183		1.3	%	—		—	%
US taxation of foreign earnings	213		2.0	%	228		1.6	%	—		—	%
Permanent differences	464		4.4	%	361		2.5	%	377		(166.4)	%
Transition tax, net of foreign tax credits	—		—	%	1,158		8.1	%	3,942		(1,741.4)	%
Federal tax rate change due to the Tax Act	—		—	%	87		0.6	%	(1,956)		864.0	%
Other	134		1.3	%	208		1.4	%	37		(16.3)	%
Change in valuation allowance	269		2.6	%	666		4.7	%	(31)		13.7	%
Impact of foreign tax rate changes	(1,882)		(18.0)	%	—		—	%	—		—	%
Total provision for income taxes	$	4,359	41.8	%	$	7,426	52.0	%	$	1,942	(857.9)	%

The permanent differences identified above include normal recurring differences, such as meals, entertainment and parking fringe benefits.

On June 28, 2019, the Canadian province of Alberta enacted the Job Creation Tax Cut which reduced the Alberta corporate income tax rate from 12% to 11% starting in 2019 with further annual reductions to 10% in 2020, 9% in 2021, and 8% in 2022. This rate reduction had a favorable impact of approximately $1.9 million on the Company’s net deferred tax liabilities in this jurisdiction.

On December 22, 2017, the United States enacted fundamental changes to the federal tax law following the passage of the Tax Cuts and Jobs Act (the "Tax Act").

The Tax Act is complex and significantly changes the U.S. corporate tax system by, among other things, (a) reducing the federal corporate tax rate from 35% to 21% for tax years beginning after December 31, 2017, (b) replacing the prior system of taxing corporations on foreign earnings of their foreign subsidiaries when the earnings are repatriated with a partial territorial tax system that provides a 100% dividends-received deduction (DRD) to domestic corporations for foreign-sourced dividends received from 10%-or-more owned foreign corporations, (c) subjecting certain unrepatriated foreign earnings to a mandatory one-time transition tax on post-1986 earnings and profits ("the transition tax"), and (d) further limiting a public entity's ability to deduct compensation in excess of $1 million for covered employees.

The United States enacted the Coronavirus Aid, Relief, and Economic Security Act (CARES Act). The CARES Act is an approximately $2 trillion emergency economic stimulus package in response to the Coronavirus outbreak, which among other things contains numerous income tax provisions. Some of these tax provisions are expected to be effective retroactively for years ending before the date of enactment. The Company is currently evaluating the impact of the CARES Act on its consolidated financial position, results of operations, and cash flows.

For the financial statements for the year ended December 31, 2017, the Company had reasonably estimated the tax effects of the Tax Act. The effect of the change in federal corporate tax rate from 35% to 21% was subject to change based on resolution of estimates used in determining the amounts of deferred tax assets and liabilities that were remeasured. The Company's calculation of the transition tax was subject to further refinement as more information was gathered from its foreign subsidiaries, estimates used in the calculation were resolved, and as states provided guidance on how the transition tax may or may not apply in their respective jurisdictions. The Company also anticipated that the deferred tax asset related to executive compensation would change based upon actual 2018 compensation as compared to its projections of compensation that were limited. Finally, the Tax Act also imposes a minimum tax on certain foreign income deemed to be in excess of a routine return based on tangible asset investment, which is designed to discourage income shifting by subjecting certain foreign intangibles and other income to current US tax. Effective for tax years beginning after 2017, US shareholders of certain foreign corporations are subject to current U.S. tax on their global intangible low-taxed income (GILTI). As of December 31, 2017, the Company had not yet evaluated its potential liability, if any, under the minimum tax for GILTI in 2018 or future years. Accordingly, the Company had not yet made an accounting policy election either to account for these effects in the future period when the tax arises or to recognize them as part of the deferred taxes. The impact on income tax expense related to the Tax Act for 2017 was $1.9 million. This amount reflects a net tax benefit of $2.3 million as a result of the Tax Act due to the remeasurement of federal deferred tax assets and liabilities from 35% to 21%. This amount also includes a charge of $3.9 million due to the transition tax. Additionally, the Company incurred a charge attributable to reducing its deferred tax assets by $0.3 million due to changes made to executive compensation rules pursuant to the Tax Act.

During the year ended December 31, 2018, the Company completed its accounting for the effects of the Tax Act on the period ended December 31, 2017, which resulted in income tax expense of $1.7 million. This consisted primarily of $0.1 million of an increase in the Company's net deferred tax liabilities due to the reduction in the federal corporate rate from 35% to 21%, an increase of $1.3 million in tax expense attributable to the transition tax and a decrease in deferred tax assets of $0.4 million due to changes made to executive compensation.

Deferred income tax attributes resulting from differences between financial accounting amounts and income tax basis of assets and liabilities are as follows:


	December 31,
	2019		2018
Deferred income tax assets
Allowance for doubtful accounts	$	1,186	$	951
Inventory	359		285
Intangible assets	1,795		1,230
Accrued expenses	4,421		4,408
Net operating loss carryforward	3,832		3,653
Finance lease obligations	1,067		731
Capital losses	463		462

Deferred share-based compensation	1,145		3,728
Interest carryforward	1,372		—
Right-of-use liability	11,891		—
Other	398		699
Deferred income tax assets	27,929		16,147
Valuation allowance	(4,067)		(3,999)
Net deferred income tax assets	23,862		12,148
Deferred income tax liabilities
Property and equipment	(6,485)		(7,597)
Goodwill	(10,652)		(9,302)
Intangible assets	(14,311)		(16,459)
Right-of-use asset	(11,891)		—
Other	(27)		(8)
Deferred income tax liabilities	(43,366)		(33,366)
Net deferred income taxes	$	(19,504)	$	(21,218)

As of December 31, 2019, the Company had federal net operating loss carry forwards (NOLs) in the amount of approximately $0.2 million which may be utilized subject to limitation under Internal Revenue Code section 382. The federal NOLs expire at various times from 2032 to 2038. In addition, as of December 31, 2019, the Company had state and foreign NOLs of $7.2 million and $12.3 million, respectively. The state NOLs expire at various times from 2025 to 2039. Approximately $0.6 million of the foreign NOLs expire at various times from 2025 to 2039, while the remainder of the Company's foreign NOLs do not expire.

In assessing the ability to realize deferred tax assets, management considers whether it is more likely than not that some portion or all of the deferred tax assets will be realized. Valuation allowances are provided when management believes the Company's deferred tax assets are not recoverable based on an assessment of estimated future taxable income that incorporates ongoing, prudent and feasible tax planning strategies. At December 31, 2019 and December 31, 2018, the Company has a valuation allowance of approximately $4.1 million and $4.0 million, respectively, primarily against certain state and foreign NOLs, capital losses generated by the disposals of certain foreign subsidiaries and other specific deferred tax assets. The increase of $0.1 million is primarily attributable to foreign net operating losses. Except for those deferred tax assets subject to the valuation allowance, management believes that it will realize all deferred tax assets as a result of sufficient future taxable income in each tax jurisdiction in which the Company has deferred tax assets.

The following table summarizes the changes in the Company’s gross unrecognized tax benefits, excluding interest and penalties:


	For the year ended December 31,
	2019		2018
Balance at beginning of period	$	723	$	156
Additions for tax positions related to the current fiscal period	—		1
Additions for tax positions related to prior years	217		341
Decreases for tax positions related to prior years	—		(2)
Current year acquisitions	—		270
Impact of foreign exchange fluctuation	13		—
Settlements	(465)		(4)
Reductions related to the expiration of statutes of limitations	(95)		(39)
Balance at end of period	$	393	$	723

The Company has recorded the unrecognized tax benefits in other long-term liabilities in the consolidated balance sheets. As of December 31, 2019 and December 31, 2018, there were approximately $0.4 million and $0.7 million of unrecognized tax benefits, respectively, including penalties and interest. If the Company recognized these unrecognized tax benefits, approximately $0.1 million would favorably affect the effective tax rate for both December 31, 2019 and 2018. Interest and penalties related to unrecognized tax benefits are recorded in income tax expense and are not significant for the years ended December 31, 2019, 2018 and 2017. The Company anticipates a decrease to its unrecognized tax benefits of less than $0.1 million excluding interest and penalties within the next 12 months.

The Company is subject to taxation in the United States and various states and foreign jurisdictions. The Company is no longer subject to U.S. federal income tax examinations for years ending before May 31, 2016 and generally is no longer subject to state, local or foreign income tax examinations by tax authorities for years ending before May 31, 2016.

Net income (loss) of foreign subsidiaries was $2.5 million, $2.0 million, and $4.1 million for the years ended December 31, 2019, 2018 and 2017, respectively. Generally, it has been the Company's practice and intention to reinvest the earnings of its non-U.S. subsidiaries in those operations. As previously noted, the Tax Act made significant changes to the taxation of undistributed earnings, requiring that all previously untaxed earnings and profits of the Company's controlled foreign operations be subjected to the transition tax. Since these earnings have now been subjected to U.S. federal tax they would only be potentially subject to limited other taxes, including foreign withholding and certain state taxes. As of December 31, 2019, the Company has not recognized a deferred tax liability for foreign withholdings and state taxes on its undistributed international earnings or losses of its foreign subsidiaries since it intends to indefinitely reinvest the earnings outside the United States. The Company has estimated that the amount of the unrecorded deferred tax liability related to undistributed international earnings is approximately $1.1 million.

Employee Benefit Plans	12 Months Ended
Employee Benefit Plans	Dec. 31, 2019
Retirement Benefits [Abstract]
Employee Benefit Plans	Employee Benefit Plans The Company provides a 401(k) savings plan for eligible U.S. based employees. Employee contributions are discretionary up to the IRS limits each year and catch up contributions are allowed for employees 50 years of age or older. Under the 401(k) plan, employees become eligible to participate on the first day of the month after three months of continuous service. Under this plan, the Company matches 50% of the employee’s contributions up to 6% of the employee’s annual compensation, as defined by the plan. There is a five-year vesting schedule for the Company match. The Company’s contribution to the plan was $4.1 million, $3.9 million, and $3.7 million for the years ended December 31, 2019, 2018 and 2017, respectively. The Company's subsidiary participated with other employers in contributing to the Boilermaker-Blacksmith National Pension Trust (EIN 48-6168020) (“Boilermakers”) and Plumbers and Pipefitters National Pension Fund (EIN 52-6152779) (“Pipefitters”), multi-employer defined benefit pension plans, which covers certain U.S. based union employees. The plans provide multiple plan benefits with corresponding contribution rates that are collectively bargained between participating employers and their affiliated Boilermakers and Pipefitters local unions. Both the Boilermakers and Pipefitters plans are between 65 percent and 80 percent funded as of the latest Form 5500 filed. The Company did not make any contributions to the Boilermakers or Pipefitters plans during the year ended December 31, 2019. The Company’s contributions to the Boilermakers and Pipefitters plans, collectively, were $0.6 million and $2.4 million for the years ended December 31, 2018 and 2017, respectively. See Note 18–Commitments and Contingencies, Pension Related Contingencies, for additional detail. The Company has other benefit plans covering certain employees throughout the Company. Amounts charged to expense under these plans were not significant in any year.

Related Party Transactions	12 Months Ended
Related Party Transactions	Dec. 31, 2019
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions The Company leases its headquarters under an operating lease from a shareholder and officer of the Company. On August 1, 2014, the Company extended its lease at its headquarters requiring monthly payments through October 2024. Total rent payments made during the year ended December 31, 2019 were approximately $1.0 million. See Note 17–Leases for further detail. The Company receives benefits consulting services from Capital Management Enterprise (“CME”), which is owned by one of its non-employee directors, Manuel N. Stamatakis. The Company does not pay any fees directly to CME. Any compensation CME receives is from third-party benefit providers.

Leases

12 Months Ended

Dec. 31, 2019

Leases [Abstract]

Leases

The Company leases certain office and operating facilities, machinery, equipment, and vehicles. Concurrent with the adoption of ASC 842, the Company recognized a right-of-use (ROU) asset and lease liability based on the present value of the future lease payments over the lease term for each lease agreement. The Company has elected not to recognize a ROU asset and lease liability for leases with terms of 12 months or less and will continue to recognize lease expense for these leases on a straight-line basis over the lease term. The Company has leases with both lease components and non-lease components, such as common area maintenance, utilities, or other repairs and maintenance. For all asset classes, the Company decided to utilize the practical expedient to include both fixed lease components and fixed non-lease components in calculating the ROU asset and lease liability. The Company identified variable lease payments, such as maintenance payments based on actual activities performed or costs incurred, at lease commencement by assessing the nature of the payment provisions, including whether the payments are subject to a minimum charge. Many of our leases include one or more options to renew. When it is reasonably certain that we will exercise the option, we include the impact of the option in the lease term for purposes of determining future lease payments. As the Company is unable to determine the discount rate implicit in its lease agreements, the Company uses its incremental borrowing rate on the commencement date to calculate the present value of future payments.

The Company’s Consolidated Balance Sheets include the following related to operating leases as of December 31, 2019:


Leases	Classification	2019
Assets:
ROU assets	Other Assets	$	45,817

Liabilities:
ROU liability - current	Accrued and other current liabilities	$	10,133
ROU liability - long-term	Other liabilities	36,750
Total ROU liabilities		$	46,883

Included within the balance of operating leases is a lease for the Company’s headquarters which is with a related party. The ROU liability for this facility is approximately $4.5 million as of December 31, 2019 and total rent payments made during the year ended December 31, 2019 approximates $1.0 million. As of December 31, 2019, the total ROU assets attributable to finance leases are approximately $19.2 million, which is included in Property, plant, and equipment, net on the Consolidated Balance Sheets.

The components of lease costs for the year ended December 31, 2019 is as follows:


	Classification	2019
Finance lease expense:
Amortization of ROU assets	Depreciation and amortization	$	5,091
Interest on lease liabilities	Interest expense	824
Operating lease expense	Cost of revenue; Selling, general & administrative expenses	12,937
Short-term lease expense	Cost of revenue; Selling, general & administrative expenses	43
Variable lease expense	Cost of revenue; Selling, general & administrative expenses	1,220
Total		$	20,115

Additional information related to leases as of December 31, 2019 is as follows:


	2019
Cash paid for amounts included in the measurement of lease liabilities for finance leases:
Finance - financing cash flows	$	4,545
Finance - operating cash flows	824
Operating - operating cash flows	12,773
ROU assets obtained in the exchange for lease liabilities:
Finance leases	$	9,502
Operating leases	18,965
Weighted-average remaining lease term (in years):
Finance leases	5.9
Operating leases	6.2
Weighted-average discount rate:
Finance leases	5.8		%
Operating leases	5.9		%

Maturities of lease liabilities as of December 31, 2019 is as follows:


	Finance		Operating
2020	$	6,241	$	12,466
2021	4,255		10,347
2022	3,381		8,193
2023	2,489		6,790
2024	1,607		5,224
Thereafter	891		13,265
Total	18,864		56,285
Less: Present value discount	1,690		9,402
Lease liability	$	17,174	$	46,883

Pursuant to the Company’s adoption of the new lease accounting guidance using a modified retrospective transition approach, as permitted, comparative information has not been restated and continues to be reported under the accounting standards in effect for those periods. As previously disclosed in its 2018 Annual Report, the following table presents the Company’s future minimum operating lease commitments as of December 31, 2018:


2019	$	10,939
2020	8,764
2021	6,327
2022	4,826
2023	4,239
Thereafter	10,667
Total	$	45,762

Leases

The Company’s Consolidated Balance Sheets include the following related to operating leases as of December 31, 2019:


Leases	Classification	2019
Assets:
ROU assets	Other Assets	$	45,817

Liabilities:
ROU liability - current	Accrued and other current liabilities	$	10,133
ROU liability - long-term	Other liabilities	36,750
Total ROU liabilities		$	46,883

The components of lease costs for the year ended December 31, 2019 is as follows:


	Classification	2019
Finance lease expense:
Amortization of ROU assets	Depreciation and amortization	$	5,091
Interest on lease liabilities	Interest expense	824
Operating lease expense	Cost of revenue; Selling, general & administrative expenses	12,937
Short-term lease expense	Cost of revenue; Selling, general & administrative expenses	43
Variable lease expense	Cost of revenue; Selling, general & administrative expenses	1,220
Total		$	20,115

Additional information related to leases as of December 31, 2019 is as follows:


	2019
Cash paid for amounts included in the measurement of lease liabilities for finance leases:
Finance - financing cash flows	$	4,545
Finance - operating cash flows	824
Operating - operating cash flows	12,773
ROU assets obtained in the exchange for lease liabilities:
Finance leases	$	9,502
Operating leases	18,965
Weighted-average remaining lease term (in years):
Finance leases	5.9
Operating leases	6.2
Weighted-average discount rate:
Finance leases	5.8		%
Operating leases	5.9		%

Maturities of lease liabilities as of December 31, 2019 is as follows:


	Finance		Operating
2020	$	6,241	$	12,466
2021	4,255		10,347
2022	3,381		8,193
2023	2,489		6,790
2024	1,607		5,224
Thereafter	891		13,265
Total	18,864		56,285
Less: Present value discount	1,690		9,402
Lease liability	$	17,174	$	46,883


2019	$	10,939
2020	8,764
2021	6,327
2022	4,826
2023	4,239
Thereafter	10,667
Total	$	45,762

Commitments and Contingencies	12 Months Ended
Commitments and Contingencies	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Legal Proceedings and Government Investigations The Company is subject to periodic lawsuits, investigations and claims that arise in the ordinary course of business. The Company cannot predict with certainty the ultimate resolution of lawsuits, investigations and claims asserted against it. Except possibly for certain of the matters described below, the Company does not believe that any currently pending legal proceeding to which the Company is a party will have a material adverse effect on its business, results of operations, cash flows or financial condition. The costs of defense and amounts that may be recovered against the Company may be covered by insurance for certain matters. Litigation and Commercial Claims The Company was contracted to perform inspections of welds on various pipeline projects in Texas for a customer. As of December 31, 2019, approximately $1.4 million of past due receivables were outstanding from this customer. The customer provided the Company with notice in December 2019, alleging that the Company’s inspection of 66 welds (out of approximately 16,000 welds inspected) were not in compliance with the contract, claimed approximately $7.6 million in damages, and requested that the Company pay these damages and any other damages incurred. The Company has filed a lawsuit in the District Court of Bexar County, Texas, 37th Judicial District, in an action captioned Mistras Group, Inc. v. Epic Y-Grade Pipeline LP, to recover the $1.4 million and other amounts due to the Company. The customer filed a counterclaim, alleging breach of contract and seeking recovery of its alleged damages. The Company believes that any successful claim by the customer regarding the Company’s workmanship will be covered by insurance, subject to payment of a deductible. At this time, the Company is unable to determine whether it has any liability in connection with this matter and if so, the amount or range of any such liability, and accordingly, has not established any accruals for this matter. A Company vehicle was involved in an accident in which individuals were injured, property was damaged, and businesses allegedly impacted by the accident have claimed economic losses. One lawsuit has been filed by one of the injured individuals in the U.S. District Court for the District of Colorado, McAllister v. Mistras Group, Inc. The Company has insurance for these types of matters. Most of the claims have been settled, including the claims covered by the McAllister case, with the two remaining unresolved claims being for economic loss and property damage. All of the claims, including the two that have not yet been resolved, have been or are expected to be fully covered by the Company's insurance. Government Investigations In May 2015, the Company received a notice from the U.S. Environmental Protection Agency (“EPA”) that it performed a preliminary assessment at a leased facility the Company operates in Cudahy, California and would be investigating the site. The purpose of the investigation was to determine whether any hazardous materials were released from the facility. The Company has been informed that certain hazardous materials and pollutants have been found in the ground water in the general vicinity of the site and the EPA is attempting to ascertain the origination or source of these materials and pollutants. Given the historic industrial use of the site, the EPA determined that the site of the Cudahy facility should be examined, along with numerous other sites in the vicinity. The Company has not received any further notices from EPA regarding this matter. In addition, in 2018, the California Department of Toxic Substances Control notified the owner of the property that it will be performing an additional investigation at the property. At this time, the Company is unable to determine whether it has any liability in connection with this matter and if so, the amount or range of any such liability, and accordingly, has not established any accruals for this matter. Pension Related Contingencies The workforce of certain of the Company’s subsidiaries are unionized and the terms of employment for these workers are governed by collective bargaining agreements, or CBAs. Under these CBAs, the Company’s subsidiaries are required to contribute to the national pension funds for the unions representing these employees, which are multi-employer pension plans. The Company was notified that a significant project was awarded to another contractor in January 2018, and as a result, one of the Company’s subsidiaries experienced a significant reduction in the number of its employees covered by one of the CBAs. Under certain circumstances, such a reduction in the number of employees participating in multi-employer pension plans pursuant to this CBA could result in a complete or partial withdrawal liability to these multi-employer pension plans under the Employee Retirement Income Security Act of 1974 ("ERISA"). Management explored options to retain a level of union work that would avoid withdrawal liability to the pension plans, but concluded during the third quarter of 2018 that the Company's subsidiaries probably would not obtain sufficient union work to avoid withdrawal liability. Therefore, the Company determined that it is probable that its subsidiary will incur a withdrawal liability related to these multi-employer pension plans. Accordingly, the Company recorded a charge of $5.9 million during 2018 and $0.8 million during 2019 for this potential withdrawal liability. The Company’s subsidiary reached an agreement with one of the pension funds in September 2019 and made a final payment of $0.9 million in complete satisfaction of the withdrawal liability of the subsidiary. Excluding the settlement payment, the Company has made monthly payments totaling $3.3 million through December 31, 2019. The balance of the estimated total amount of this potential liability as of December 31, 2019 is approximately $2.5 million. Severance and labor disputes The Company’s German subsidiary provides employees to customers under temporary staff leasing arrangements. In April 2017, the German Labor Lease Act was passed in Germany limiting the duration of temporary workers to eighteen months, or longer as subsequently agreed with by a customer appropriate authority. Since the passing of the German Labor Lease Act, the Company explored selling its staff leasing services and concluded during the third quarter of 2018 that a sale would not be probable. As a result, the Company decided that it would not renew several of these leasing services contracts when they expired beginning in 2019. Due to the limit on the length of service allowed under the German Labor Lease Act, employees are being transitioned off the customer contracts. The German subsidiary has terminated, or will terminate, some these employees, creating a severance obligation to the terminated employees, and has transitioned, or will transition other employees to the Company's other customers. During December 2019, the Company executed an agreement to sell the rights of certain customer contracts for total consideration of approximately $0.1 million, effective January 1, 2020. No other assets or liabilities other than those employee benefits related to employees working on the customer contracts were included in the sale. As of December 31, 2019, the Company accrued approximately $0.8 million for estimated severance payment obligations, which takes into account the Company's estimate with respect to the employees that have been or will be transitioned to the German subsidiaries' other customers. The $0.8 million of estimated obligations is net of $0.2 million in payments and $0.5 million in reversals due to employees being transitioned to customer contracts. During 2018, the Company recorded approximately $1.2 million in charges related to labor claims against its Brazilian subsidiary, which are included within Selling, general and administrative expenses. These claims related to employees in a company acquired by the Brazilian subsidiary in a prior period. The Company believes it is entitled to indemnification from the sellers of the acquired company for most of these charges but has not recorded the expected recovery of indemnification for these labor claims as the amount and timing of collection is uncertain as of December 31, 2019. Acquisition and disposition related contingencies The Company is liable for contingent consideration in connection with certain of its acquisitions. As of December 31, 2019, total potential acquisition-related contingent consideration ranged from zero to approximately $7.9 million and would be payable upon the achievement of specific performance metrics by certain of the acquired companies over the next 2.8 years. With respect to the acquisition made in 2018, the Company has filed a claim with the sellers and the Company's insurance carrier through which the Company has representations and warranty insurance concerning certain matters that may impact the purchase price. This matter is currently being investigated and discussed with the sellers and the Company's insurance carrier. During 2018, the Company sold a subsidiary in the Products and Systems segment. As part of the sale, the Company entered into a three-year agreement to purchase products from the buyer, with a cumulative commitment of $2.3 million, of which $1.4 million is remaining as of December 31, 2019. The agreement is based on third party pricing and the Company's planned purchase requirements over the three year purchase period to meet the minimum contractual purchases.

Segment Disclosure

12 Months Ended

Dec. 31, 2019

Segment Reporting [Abstract]

Segment Disclosure

The Company’s three operating segments are:

•Services. This segment provides asset protection solutions predominantly in North America, with the largest concentration in the United States, followed by Canada, consisting primarily of NDT and inspection and engineering services that are used to evaluate the safety, structural integrity and reliability of critical energy, industrial and public infrastructure and commercial aerospace components.

•International. This segment offers services as well as products and systems, similar to those of the other segments, to select markets within Europe, the Middle East, Africa, Asia and South America, but not to customers in China and South Korea, which are served by the Products and Systems segment.

•Products and Systems. This segment designs, manufactures, sells, installs and services the Company’s asset protection products and systems, including equipment and instrumentation, predominantly in the United States.

Costs incurred for general corporate services, including finance, legal, and certain other costs that are provided to the segments are reported within Corporate and eliminations. Sales to the International segment from the Products and Systems segment and subsequent sales by the International segment of the same items are recorded and reflected in the operating performance of both segments. Additionally, engineering charges and royalty fees charged to the Services and International segments by the Products and Systems segment are reflected in the operating performance of each segment. All such intersegment transactions are eliminated in the Company’s consolidated financial reporting.

The accounting policies of the reportable segments are the same as those described in Note 1–Summary of Significant Accounting Policies and Practices. Segment income from operations is one of the primary performance measures used by the Chief Executive Officer, who is the chief operating decision maker, to assess the performance of each segment and make resource allocation decisions. Certain general and administrative costs such as human resources, information technology and training are allocated to the segments. Segment income from operations excludes interest and other financial charges and income taxes. Corporate and other assets are comprised principally of cash, deposits, property, plant and equipment, domestic deferred taxes, deferred charges and other assets. Corporate loss from operations consists of administrative charges related to corporate personnel and other charges that cannot be readily identified for allocation to a particular segment.

Selected financial information by segment for the periods shown was as follows (intercompany transactions are eliminated in Corporate and eliminations):


	For the year ended December 31,
	2019		2018		2017
Revenues
Services	$	595,130	$	574,619	$	543,565
International	144,271		153,448		144,265
Products and Systems	18,583		23,426		23,297
Corporate and eliminations	(9,398)		(9,139)		(10,157)
	$	748,586	$	742,354	$	700,970


	For the year ended December 31,
	2019		2018		2017
Gross profit
Services	$	165,513	$	151,974	$	139,160
International	43,145		45,464		38,974
Products and Systems	8,639		10,560		9,798
Corporate and eliminations	—		(124)		(220)
	$	217,297	$	207,874	$	187,712


	For the year ended December 31,
	2019		2018		2017
Income from operations
Services	$	49,593	$	47,126	$	46,677
International	5,856		3,953		3,537
Products and Systems	(529)		2,368		(16,991)
Corporate and eliminations	(30,783)		(31,226)		(29,063)
	$	24,137	$	22,221	$	4,160


	For the year ended December 31,
	2019		2018		2017
Depreciation and amortization
Services	$	28,854	$	24,079	$	21,649
International	8,285		8,846		7,768
Products and Systems	1,213		1,429		2,180
Corporate and eliminations	181		59		(214)
	$	38,533	$	34,413	$	31,383


	December 31,
	2019		2018
Intangible assets, net
Services	$	98,284	$	98,362
International	9,814		11,143
Products and Systems	1,181		1,438
Corporate and eliminations	258		452
	$	109,537	$	111,395


	December 31,
	2019		2018
Total assets
Services	$	537,518	$	523,506
International	153,380		146,535
Products and Systems	16,028		12,264
Corporate and eliminations	12,952		11,732
	$	719,878	$	694,037


	December 31,
	2019		2018
Long-lived assets
United States	$	233,679	$	230,140
Other Americas	181,550		177,628
Europe	75,325		76,781
	$	490,554	$	484,549


	December 31,
	2017
Revenue
United States	$	466,683
Other Americas	86,870
Europe	132,421
Asia-Pacific	14,996
	$	700,970

Refer to Note 2–Revenue, for revenues by geographic area for the years ended December 31, 2019 and 2018.

Repurchase of Common Stock	12 Months Ended
Repurchase of Common Stock	Dec. 31, 2019
Equity [Abstract]
Repurchase of Common Stock	Repurchase of Common StockOn October 7, 2015, the Company's Board of Directors approved a $50 million stock repurchase plan. The Company retired all of its repurchased shares during the fourth quarter of 2017. The Board of Directors approved the termination of the stock repurchase plan effective April 1, 2019. There were no repurchases of common stock under the stock repurchase plan during 2019 and 2018.

Selected Quarterly Financial Information (unaudited)

12 Months Ended

Dec. 31, 2019

Quarterly Financial Information Disclosure [Abstract]

Selected Quarterly Financial Information (unaudited)

The following is a summary of the quarterly results of operations for calendar years 2019, 2018 and 2017.


Quarter ended	December 31, 2019		September 30, 2019		June 30, 2019		March 31, 2019
Revenues	$	178,991	$	192,192	$	200,616	$	176,787
Gross Profit	50,583		57,769		60,071		48,874
Income (loss) from operations	2,335		10,779		15,419		(4,396)
Net income (loss) attributable to Mistras Group, Inc.	$	829	$	3,093	$	7,431	$	(5,293)
Earnings (loss) per common share:
Basic	$	0.03	$	0.11	$	0.26	$	(0.19)
Diluted	$	0.03	$	0.11	$	0.26	$	(0.19)


Quarter ended	December 31, 2018		September 30, 2018		June 30, 2018		March 31, 2018
Revenues	$	180,762	$	182,169	$	191,793	$	187,630
Gross Profit	52,315		52,332		55,083		48,144
Income from operations	2,502		3,017		10,304		6,398
Net income (loss) attributable to Mistras Group, Inc.	$	(1,061)	$	(1,011)	$	6,000	$	2,908
Earnings (loss) per common share:
Basic	$	(0.04)	$	(0.04)	$	0.21	$	0.10
Diluted	$	(0.04)	$	(0.04)	$	0.20	$	0.10


Quarter ended	December 31, 2017		September 30, 2017		June 30, 2017		March 31, 2017
Revenues	$	187,643	$	179,570	$	170,439	$	163,318
Gross Profit	50,319		47,897		46,343		43,153
Income (loss) from operations	6,282		(10,375)		5,003		3,250
Net income (loss) attributable to Mistras Group, Inc.	$	884	$	(6,968)	$	2,217	$	1,692
Earnings (loss) per common share:
Basic	$	0.03	$	(0.25)	$	0.08	$	0.06
Diluted	$	0.03	$	(0.25)	$	0.07	$	0.06

Subsequent Events	12 Months Ended
Subsequent Events	Dec. 31, 2019
Subsequent Events [Abstract]
Subsequent Events	Subsequent EventsIn March 2020, the World Health Organization recognized the novel strain of coronavirus, COVID-19, as a pandemic. The coronavirus outbreak has severely restricted the level of economic activity around the world. In response to this coronavirus outbreak, the governments of many countries, states, cities and other geographic regions have taken preventative or protective actions, such as imposing restrictions on travel and business operations and advising or requiring individuals to limit or forgo their time outside of their homes. Temporary closures of businesses have been ordered and numerous other businesses have temporarily closed voluntarily or restricted access to their premises. Further, individuals’ ability to travel has been curtailed through mandated travel restrictions and may be further limited through additional voluntary or mandated closures of travel-related businesses. A significant portion of the Company’s business and revenue is derived from our technicians and service people being physically located on site at our customer’s facilities. It is unclear at this point, as a result of government impositions and those of our customers, whether our personnel will be able to travel and gain admittance to our customer’s sites. In addition, to the extent COVID-19 impacts the financial performance of our customers, these customers may likewise look to further control their outside expenditures, including with respect to services performed by and products of the Company. As a result, the coronavirus outbreak may have a material adverse impact on the Company’s financial position, operations and cash flows in 2020. Given the uncertainty regarding the spread of this coronavirus, the related financial impact cannot be reasonably predicted or estimated at this time.

Summary of Significant Accounting Policies and Practices (Policies)	12 Months Ended
	Dec. 31, 2019
Accounting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation The accompanying audited consolidated financial statements include the accounts of Mistras Group, Inc. and its wholly and majority-owned subsidiaries. For subsidiaries in which the Company’s ownership interest is less than 100%, the non-controlling interests are reported in stockholders’ equity in the accompanying consolidated balance sheets. The non-controlling interests in net income, net of tax, is classified separately in the accompanying consolidated statements of income (loss). All significant intercompany accounts and transactions have been eliminated in consolidation.
Reclassifications	Reclassifications Certain amounts in prior periods have been reclassified to conform to the current year presentation. Such reclassifications did not have a material effect on the Company's financial condition or results of operations as previously reported.
Use of Estimates	Use of Estimates The preparation of financial statements in accordance with U.S. generally accepted accounting principles (GAAP) requires that the Company make estimates and assumptions that affect the reported amounts of assets, liabilities, revenue and expenses and disclosure of contingent assets and liabilities at the date of financial statements. The Company bases its estimates and assumptions on historical experience, known or expected trends and various other assumptions that it believes to be reasonable. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates, which may cause the Company’s future results to be significantly affected.
Cash and Cash Equivalents	Cash and Cash Equivalents The Company considers all highly liquid investments purchased with an original maturity of three months or less to be cash equivalents.
Accounts Receivable	Accounts Receivable Accounts receivable are stated net of an allowance for doubtful accounts and sales allowances. Outstanding accounts receivable balances are reviewed periodically, and allowances are provided at such time that management believes it is probable that such balances will not be collected within a reasonable period of time, to the extent reasonably estimable. The Company extends credit to its customers based upon credit evaluations in the normal course of business, primarily with 30-day terms. Bad debts are provided for based on historical experience and management’s evaluation of outstanding accounts receivable. Accounts are written off when they are deemed uncollectible under GAAP accounting standards.
Concentrations of Credit Risk	Concentration of Credit Risk For each of the years ended December 31, 2019 and 2018, no customer represented 10% or more of the Company's revenue. One customer represented 11% of the Company's revenue for the year ended December 31, 2017, which was primarily generated from the Services segment. Financial instruments that potentially subject the Company to concentrations of credit risk consist principally of cash and cash equivalents and accounts receivable. At times, cash deposits may exceed the limits insured by the Federal Deposit Insurance Corporation. The Company believes it is not exposed to any significant credit risk or risk of nonperformance of financial institutions.
Inventories	Inventories Inventories are stated at the lower of cost or net realizable value, as determined by using the first-in, first-out method, or market. Work in process and finished goods inventory include material, direct labor, variable costs and overhead.
Purchased and Internal-Use Software	Purchased and Internal-Use Software The Company capitalizes certain costs that are incurred to purchase or to create and implement internal-use software, which includes software coding, installation and testing. Capitalized costs are amortized on a straight-line basis over three years, the estimated useful life of the software.
Property, Plant and Equipment	Property, Plant and Equipment Property, plant and equipment are recorded at cost. Depreciation of property, plant and equipment is computed utilizing the straight-line method over the estimated useful lives of the assets. Amortization of leasehold improvements is computed utilizing the straight-line method over the shorter of the remaining lease term or estimated useful life. Repairs and maintenance costs are expensed as incurred.
Goodwill	Goodwill Goodwill represents the excess purchase price of acquired businesses over the fair values attributed to underlying net tangible assets and identifiable intangible assets. The Company tests goodwill for impairment at a “reporting unit” level (which for the Company is represented by (i) our Services segment, (ii) our Products and Systems segment, and (iii) the European component of our International segment and (iv) the Brazilian component of our International segment). Our annual impairment test is conducted on the first day of our fourth quarter, which is October 1. Goodwill is also tested for impairment whenever an event occurs or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying amount. If the fair value of a reporting unit is less than its carrying value, this is an indicator that the goodwill assigned to that reporting unit may be impaired. As a result of the Company adopting Accounting Standards Update ("ASU") No. 2017-04, Intangibles-Goodwill and Other (Topic 350), impairment will be recorded in the amount that fair value is less than carrying value, as the ASU eliminated step two of the goodwill impairment process. The Company considers the income and market approaches to estimating the fair value of our reporting units, which requires significant judgment in evaluation of economic and industry trends, estimated future cash flows, discount rates and other factors.
Impairment of Long-lived Assets	Impairment of Long-lived Assets The Company reviews the recoverability of its long-lived assets (or asset groups) whenever events or changes in circumstances indicate that the carrying amount of the long-lived asset (group) might not be recoverable. The assessment for potential impairment is based primarily on the Company’s ability to recover the carrying value of its long-lived assets from expected future undiscounted cash flows. If the total expected future undiscounted cash flows are less than the carrying amount of the assets, a loss is recognized for the difference between fair value (computed based upon the expected future discounted cash flows) and the carrying value of the assets.
Acquisitions	AcquisitionsThe Company allocates the purchase price of acquired businesses to their identifiable tangible assets and liabilities as well as identifiable intangible assets, such as customer relationships, technology, non-compete agreements and trade names. Certain estimates and judgments are required in the application of the fair value techniques, including estimates of the respective acquisition's future performance and related cash flows, selection of a discount rate and economic lives, and use of Level 3 measurements as defined in ASC No. 820, Fair Value Measurements and Disclosure. Deferred taxes are recorded for any differences between the assigned values and tax bases of assets and liabilities.
Research and Engineering	Research and Engineering Research and product development costs are expensed as incurred.
Advertising, Promotions and Marketing	Advertising, Promotions and Marketing The costs for advertising, promotion and marketing programs are expensed as incurred and are included in selling, general and administrative expenses.
Fair Value of Financial Instruments	Fair Value of Financial Instruments The carrying amounts of cash and cash equivalents, accounts receivable, accounts payable and other financial current assets and liabilities approximate fair value based on the short-term nature of the items.
Foreign Currency Translation	Foreign Currency Translation The financial position and results of operations of the Company’s foreign subsidiaries are measured using their functional currencies, which are their local currencies. Assets and liabilities of foreign subsidiaries are translated into the U.S. Dollar at the exchange rates in effect at the balance sheet date. Income and expenses are translated at the average exchange rate during the period. Translation gains and losses are reported as a component of other comprehensive (loss) income for the period and included in accumulated other comprehensive (loss) income within stockholders’ equity. Foreign currency (gains) and losses arising from transactions denominated in currencies other than the functional currency are included in net income, reported in selling, general and administrative expenses,
Self-Insurance	Self-Insurance The Company is self-insured for certain losses relating to workers’ compensation and health benefit claims. The Company maintains third-party excess insurance coverage for all workers' compensation and health benefit claims in excess of approximately $0.3 million per occurrence to reduce its exposure from such claims. Self-insured losses are accrued when it is probable that an uninsured claim has been incurred but not reported and the amount of the loss can be reasonably estimated at the balance sheet date.
Share-based Compensation	Share-based Compensation The value of services received from employees and directors in exchange for an award of an equity instrument is measured based on the grant-date fair value of the award. Such value is recognized as a non-cash expense on a straight-line basis over the period the individual provides services, which is typically the vesting period of the award with the exception of awards with graded vesting that contain an internal performance measure where each tranche is recognized on a straight-line basis over its vesting period subject to the probability of meeting the performance requirements and adjusted for the number of shares expected to be earned. As share-based compensation expense is based on awards ultimately expected to vest, the amount of expense is reduced for estimated forfeitures. The cost of these awards is recorded in selling, general and administrative expense in the Company’s consolidated statements of income.
Income Taxes	Income Taxes Income taxes are accounted for under the asset and liability method. Deferred income tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and tax credit carry-forwards. Deferred income tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred income tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. A valuation allowance is provided if it is more likely than not that some or all of a deferred income tax asset will not be realized. Financial accounting standards prescribe a minimum recognition threshold a tax position is required to meet before being recognized in the financial statements. These standards also provide guidance on de-recognition, measurement, and classification of amounts relating to uncertain tax positions, accounting for and disclosure of interest and penalties, accounting in interim periods and disclosures required. Interest and penalties related to unrecognized tax positions are recognized as incurred within “provision for income taxes” in the consolidated statements of income.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In February 2016, the Financial Accounting Standards Board ("FASB") issued ASU No. 2016-02, Leases (Topic 842), which the Company adopted as of January 1, 2019. Topic 842 requires the recognition of lease rights and obligations as assets and liabilities on the balance sheet. The Company elected the modified retrospective method permitted by the standard, upon which prior-period information has not been restated. The standard provided for several practical expedient options for use in transition. The Company elected to utilize the “package of practical expedients,” which permits the Company not to reassess previous conclusions reached on lease identification, lease classification and initial direct costs. The Company also elected to utilize the practical expedient available to not separate lease and non-lease components within the lease and has therefore accounted for all lease components as a single lease component. Adoption of the new standard resulted in the recording of a right-of-use (ROU) asset and liability related to the Company’s operating leases of approximately $38 million as of January 1, 2019. The new standard did not have a material impact to our statements of income or cash flows. In January 2017, the FASB issued ASU No. 2017-04, Intangibles-Goodwill and Other (Topic 350). This amendment eliminates Step Two of the goodwill impairment test. Under the amendments in this update, entities should perform the annual goodwill impairment test by comparing the carrying value of their reporting units to their fair value. An entity should record an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value. Tax deductibility of goodwill should be considered in evaluating any reporting unit's impairment loss to be taken. ASU 2017-04 is effective for fiscal years beginning after December 15, 2019, with early adoption permitted. The Company early adopted ASU 2017-04 in the third quarter of 2017 for its consolidated financial statements and related disclosures. In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes (“ASU 2019-12”). ASU 2019-12 simplifies the accounting for income taxes by eliminating certain exceptions related to the approach for intraperiod tax allocation, the methodology for calculating income taxes in an interim period, and the recognition of deferred tax liabilities related to outside basis differences. The standard is effective for interim and annual periods beginning January 1, 2021, with certain amendments applied prospectively and others requiring retrospective application. Early adoption is permitted, with any adjustments reflected as of the beginning of the fiscal year of adoption. If early adoption is elected, all changes as a result of the standard must be adopted in the same period. The Company is currently evaluating the impact of this guidance on its consolidated financial position, results of operations, and cash flows.
Revenue	Revenue The majority of the Company's revenues are derived from providing services on a time and material basis and are short-term in nature. Performance Obligations A performance obligation is a promise in a contract to transfer a distinct good or service to the customer, and is the unit of account in ASC Topic 606. A contract’s transaction price is allocated to each distinct performance obligation and recognized as revenue when, or as, the performance obligation is satisfied. The majority of our contracts have a single performance obligation as the promise to transfer the individual goods or services is not separately identifiable from other promises in the contracts and is, therefore, not distinct. The Company provides highly integrated and bundled inspection services to its customers. Some of our contracts have multiple performance obligations, most commonly due to the contract providing both goods and services. For contracts with multiple performance obligations, the Company allocates the contract’s transaction price to each performance obligation using our best estimate of the standalone selling price of each distinct good or service in the contract. The primary method used to estimate standalone selling price is a relative selling price based on price lists. Contract modifications are not routine in the performance of our contracts. Generally, when contracts are modified, the modification is to account for changes in scope to the goods and services that are provided. In most instances, contract modifications are for goods or services that are distinct, and, therefore, are accounted for as a separate contract. Our performance obligations are satisfied over time as work progresses or at a point in time. The majority of our revenue recognized over time as work progresses is related to our service deliverables, which includes providing testing, inspection and mechanical services to our customers. Revenue is recognized over time based on time and material incurred to date which best portrays the transfer of control to the customer. The Company also utilizes an available practical expedient that provides for revenue to be recognized in an amount that corresponds directly with the value to the customer of the entity’s performance completed to date. Fixed fee arrangements are determined based on expected labor, material, and overhead to be consumed on fulfillment of such services. Revenue is recognized on a cost-to-cost method tracked on an input basis. The majority of our revenue recognized at a point in time is related to product sales when the customer obtains control of the asset, which is generally upon shipment to the customer. Contract costs include labor, material and overhead. The Company expects any significant remaining performance obligations to be satisfied within one year. Contract Estimates The majority of our revenues are short-term in nature. The Company has many Master Service Agreements (MSAs) that specify an overall framework and terms of contract when the Company and customers agree upon services or products to be provided. The actual contracting to provide services or furnish products are triggered by a work order, purchase order, or some similar document issued pursuant to a MSA which sets forth the scope of services and/or identifies the products to be provided. From time-to-time, the Company may enter into long-term contracts, which can range from several months to several years. Revenue on such long-term contracts is recognized as work is performed based on total costs incurred to date in relation to the total estimated costs for the performance of the contract at completion. This includes contract estimates of costs to be incurred for the performance of the contract. Cost estimation is based upon the professional knowledge and experience of our project managers, engineers and financial professionals. Factors that are considered in estimating the work to be completed include the availability of materials, the effect of any delays in our project performance and the recoverability of any claims. Whenever revisions of estimates, contract costs and/or contract values indicate that the contract costs will exceed estimated revenues, thus creating a loss, a provision for the total estimated loss is recorded in that period.
Fair Value Measurements	Fair Value Measurements The Company performs fair value measurements in accordance with the guidance provided by ASC 820, Fair Value Measurements and Disclosures. ASC 820 defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. It also establishes a three level hierarchy that prioritizes the inputs used to measure fair value. The three levels of the hierarchy are defined as follows: Level 1 — Inputs are unadjusted quoted prices in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date. Level 2 — Observable inputs other than quoted prices included in Level 1, including quoted prices for similar assets or liabilities in active markets, quoted prices for identical assets or liabilities in inactive markets, inputs other than quoted prices that are observable for the asset or liability and inputs derived principally from or corroborated by observable market data. Level 3 — Unobservable inputs reflecting the Company’s own assumptions about inputs that market participants would use in pricing the asset or liability based on the best information available. Financial instruments measured at fair value on a recurring basis The fair value of contingent consideration liabilities was estimated using a discounted cash flow technique with significant inputs that are not observable in the market and thus represents a Level 3 fair value measurement as defined in ASC 820. The significant inputs in the Level 3 measurement not supported by market activity include the probability assessments of expected future cash flows related to the acquisitions, appropriately discounted considering the uncertainties associated with the obligation, and as calculated in accordance with the terms of the applicable acquisition agreements.

Revenue (Tables)

12 Months Ended

Dec. 31, 2019

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregated Revenues by Industry and Key Geographic Location

The following series of tables present our disaggregated revenues:

Revenue by industry was as follows:


Year ended December 31, 2019	Services		International		Products & Systems		Corp/Elim		Total
Oil & Gas	$	390,815	$	44,447	$	756	$	—	$	436,018
Aerospace & Defense	51,390		41,224		1,237		—		93,851
Industrials	64,622		21,405		3,187		—		89,214
Power generation & Transmission	30,300		10,289		2,726		—		43,315
Other Process Industries	28,495		10,196		418		—		39,109
Infrastructure, Research & Engineering	14,269		9,520		9,316		—		33,105
Other	15,239		7,190		943		(9,398)		13,974
Total	$	595,130	$	144,271	$	18,583	$	(9,398)	$	748,586


Year ended December 31, 2018	Services		International		Products & Systems		Corp/Elim		Total
Oil & Gas	$	378,904	$	37,953	$	1,255	$	—	$	418,112
Aerospace & Defense	50,500		54,853		2,355		—		107,708
Industrials	60,594		26,209		3,097		—		89,900
Power generation & Transmission	30,687		8,522		4,904		—		44,113
Other Process Industries	26,425		9,497		124		—		36,046
Infrastructure, Research & Engineering	11,283		9,032		5,246		—		25,561
Other	16,226		7,382		6,445		(9,139)		20,914
Total	$	574,619	$	153,448	$	23,426	$	(9,139)	$	742,354

Revenue per key geographic location was as follows:


Year ended December 31, 2019	Services		International		Products & Systems		Corp/Elim		Total
United States	$	487,408	$	631	$	12,011	$	(4,918)	$	495,132
Other Americas	104,081		7,659		407		(407)		111,740
Europe	2,342		127,581		1,940		(3,978)		127,885
Asia-Pacific	1,299		8,400		4,225		(95)		13,829
Total	$	595,130	$	144,271	$	18,583	$	(9,398)	$	748,586


Year ended December 31, 2018	Services		International		Products & Systems		Corp/Elim		Total
United States	$	478,853	$	568	$	11,493	$	(3,500)	$	487,414
Other Americas	90,823		7,995		1,068		(1,638)		98,248
Europe	4,252		138,948		3,958		(3,846)		143,312
Asia-Pacific	691		5,937		6,907		(155)		13,380
Total	$	574,619	$	153,448	$	23,426	$	(9,139)	$	742,354

Earnings per Share (Tables)

12 Months Ended

Dec. 31, 2019

Earnings Per Share [Abstract]

Schedule of Computations of Basic and Diluted Earnings Per Share

The following table sets forth the computations of basic and diluted earnings per share:


	For the year ended December 31,
	2019		2018		2017
Basic earnings (loss) per share:
Numerator:
Net income (loss) attributable to Mistras Group, Inc.	$	6,060	$	6,836	$	(2,175)
Denominator
Weighted average common shares outstanding	28,740		28,406		28,422
Basic earnings (loss) per share	$	0.21	$	0.24	$	(0.08)

Diluted earnings (loss) per share:
Numerator:
Net income (loss) attributable to Mistras Group, Inc.	$	6,060	$	6,836	$	(2,175)
Denominator
Weighted average common shares outstanding	28,740		28,406		28,422
Dilutive effect of stock options outstanding	98		683		—
Dilutive effect of restricted stock units outstanding	208		338		—
	29,046		29,427		28,422
Diluted earnings (loss) per share	$	0.21	$	0.23	$	(0.08)

Schedule of Potential Common Shares Excluded From the Computation of Diluted Earnings Per Share

The following potential common shares were excluded from the computation of diluted earnings per share, as the effect would have been anti-dilutive:


	For the year ended December 31,
	2019	2018	2017
Potential common stock attributable to restricted stock units (RSUs) and performance stock units (PSUs) outstanding ⁽¹⁾	42	1	353
Potential common stock attributable to stock options outstanding ⁽¹⁾	5	5	810
Total	47	6	1,163

Accounts Receivable (Tables)

12 Months Ended

Dec. 31, 2019

Receivables [Abstract]

Schedule of Accounts Receivable, Net

Accounts receivable consist of the following:


	December 31,
	2019		2018
Trade accounts receivable	$	144,282	$	152,511
Allowance for doubtful accounts	(8,285)		(4,187)
Accounts receivable, net	$	135,997	$	148,324

Inventories (Tables)

12 Months Ended

Dec. 31, 2019

Inventory Disclosure [Abstract]

Schedule of Inventories

Inventories consist of the following:


	December 31,
	2019		2018
Raw materials	$	5,314	$	6,975
Work in progress	1,549		1,019
Finished goods	3,957		2,640
Consumable supplies	2,593		2,419
Inventories	$	13,413	$	13,053

Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2019

Property, Plant and Equipment [Abstract]

Schedule of Property, Plant and Equipment, Net

Property, plant and equipment consist of the following:


		December 31,
	Useful Life	2019		2018
	(Years)
Land		$	2,672	$	2,680
Building and improvements	30-40	24,537		24,338
Office furniture and equipment	5-8	17,227		16,170
Machinery and equipment	5-7	225,974		208,245
		270,410		251,433
Accumulated depreciation and amortization		(171,803)		(157,538)
Property, plant and equipment, net		$	98,607	$	93,895

Acquisitions and Disposition (Tables)

12 Months Ended

Dec. 31, 2019

Business Combinations [Abstract]

Schedule of Estimated Fair Value of Assets Acquired and Liabilities Assumed at the Date of Acquisition



	2019


Cash paid	$	4,380
Working capital adjustments	(152)

Fair value of contingent consideration	1,142
Total consideration	$	5,370

Current net assets	$	142
Other assets	34

Property, plant and equipment	65

Intangibles	3,594
Goodwill	1,535
Net assets acquired	$	5,370

Schedule of Acquisition-related Expenses

These amounts are recorded as acquisition-related expense, net, on the consolidated statements of income and were as follows for the years ended December 31, 2019, 2018 and 2017:


	For the year ended December 31,
	2019		2018		2017
Due diligence, professional fees and other transaction costs	$	364	$	1,248	$	945
Adjustments to fair value of contingent consideration liabilities	511		(716)		(463)
Acquisition-related expense, net	$	875	$	532	$	482

Goodwill (Tables)

12 Months Ended

Dec. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Changes in Carrying Amount of Goodwill by Segment

The changes in the carrying amount of goodwill by segment is shown below:


	Services		International		Products and Systems		Total





Balance at December 31, 2017	$	165,801	$	37,637	$	—	$	203,438
Goodwill acquired during the year	83,163		—		—		83,163
Adjustments to preliminary purchase price allocations	(1,977)		—		—		(1,977)
Foreign currency translation	(3,511)		(1,854)		—		(5,365)
Balance at December 31, 2018	$	243,476	$	35,783	$	—	$	279,259
Goodwill acquired during the year	1,535		—		—		1,535
Adjustments to preliminary purchase price allocations	(2,332)		—		—		(2,332)
Foreign currency translation	4,536		(588)		—		3,948
Balance at December 31, 2019	$	247,215	$	35,195	$	—	$	282,410

Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Gross Amount and Accumulated Amortization of Intangible Assets

The gross carrying amount and accumulated amortization of intangible assets were as follows:


		December 31,
		2019										2018
	Useful Life (Years)	Gross Amount		Accumulated Amortization		Net Carrying Amount		Gross Amount		Accumulated Amortization		Net Carrying Amount
Customer relationships	5-18	$	113,861	$	(67,853)	$	46,008	$	112,624	$	(60,993)	$	51,631
Software/Technology	3-15	77,914		(18,756)		59,158		67,240		(13,319)		53,921
Covenants not to compete	2-5	12,795		(11,630)		1,165		12,593		(10,825)		1,768
Other	2-12	10,813		(7,607)		3,206		10,317		(6,242)		4,075
Total		$	215,383	$	(105,846)	$	109,537	$	202,774	$	(91,379)	$	111,395

Schedule of Expected Amortization Expense of Intangible Assets

Amortization expense in each of the five years and thereafter subsequent to December 31, 2019 related to the Company’s intangible assets is expected to be as follows:


	Expected Amortization Expense
2020	$	13,864
2021	12,474
2022	12,042
2023	10,987
2024	9,870
Thereafter	50,300
Total	$	109,537

Accrued Expenses and Other Current Liabilities (Tables)

12 Months Ended

Dec. 31, 2019

Payables and Accruals [Abstract]

Schedule of Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consist of the following:


	December 31,
	2019		2018
Accrued salaries, wages and related employee benefits	$	30,072	$	29,959
Contingent consideration	2,614		1,687
Accrued workers' compensation and health benefits	4,467		5,086
Deferred revenues	5,860		5,046

Right-of-use liability - Operating	10,133		—
Pension accrual	2,519		5,585
Other accrued expenses	25,724		26,532
Total accrued expenses and other current liabilities	$	81,389	$	73,895

Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2019

Debt Disclosure [Abstract]

Schedule of Long-term Debt

Long-term debt consists of the following:


	December 31,
	2019		2018
Senior credit facility	$	151,773	$	181,656
Senior secured term loan, net of debt issuance costs of $0.1 million	94,919		99,897
Notes payable	—		68
Other	8,021		8,999
Total debt	254,713		290,620
Less: Current portion	(6,593)		(6,833)
Long-term debt, net of current portion	$	248,120	$	283,787

Schedule of Principal Payments Due Under All Borrowing Agreements

Scheduled principal payments due under all borrowing agreements in each of the five years and thereafter subsequent to December 31, 2019 are as follows:


2020	$	6,593
2021	8,864
2022	11,210
2023	225,343
2024	890
Thereafter	1,813
Total	$	254,713

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28541-108399

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21506-112644

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(e),(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21521-112644

Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21538-112644

Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644

+ Details

Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2019

Fair Value Disclosures [Abstract]

Schedule of Changes in Fair Value Level 3 Contingent Consideration

The following table represents the changes in the fair value of Level 3 contingent consideration:


Balance at December 31, 2017	$	5,508
Acquisitions	—
Payments	(2,277)
Accretion of liability	175
Revaluation	(891)
Foreign currency translation	(150)
Balance at December 31, 2018	$	2,365
Acquisitions	1,142
Payments	(852)
Accretion of liability	92
Revaluation	419
Foreign currency translation	50
Balance at December 31, 2019	$	3,216

Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2019

Share-based Payment Arrangement [Abstract]

Schedule of Cash Proceeds and Aggregate Fair Value of Stock Options Exercised

Cash proceeds from, and the intrinsic value of, stock options exercised during the years ended December 31, 2019, 2018 and 2017 were as follows (in thousands):


	For the year ended December 31,
	2019 ¹		2018		2017
Cash proceeds from options exercised	$	32	$	273	$	275
Aggregate intrinsic value of options exercised	$	4,530	$	277	$	580

____________________

1 During 2019, 2.1 million stock options were net exercised, wherein the option holders surrendered a portion of the underlying stock option awards to pay the exercise price and required minimum tax withholding.

Schedule of Stock Options Activity


	For the years ended December 31,
	2019				2018					2017
	Common Stock Options	Weighted Average Exercise Price		Common Stock Options	Weighted Average Exercise Price		Common Stock Options	Weighted Average Exercise Price
Outstanding at beginning of year:	2,105	$	13.47	2,130	$	13.43	2,167	$	13.33
Granted	—	$	—	—	$	—	—	$	—
Exercised	(2,093)	$	13.45	(25)	$	10.75	(37)	$	7.39
Expired or forfeited	(7)	$	10.00	—	$	—	—	$	—
Outstanding at end of year:	5	$	22.35	2,105	$	13.47	2,130	$	13.43

Schedule of Stock Options Outstanding and Exercisable


			December 31, 2019
			Options Outstanding					Options Exercisable
Exercise Price	Total Options Outstanding		Weighted Average Remaining Life (Years)	Weighted Average Exercise Price		Number Exercisable		Weighted Average Exercise Price
$22.35	5		2.2	$	22.35	5		$	22.35


Aggregate Intrinsic Value	$	—				$	—

Schedule of Vesting Activity of Restricted Stock Units

A summary of the vesting activity of restricted stock unit awards, with the respective fair value of the awards, is as follows: (in thousands):


	For the year ended December 31,
	2019		2018		2017
Restricted stock awards vested	172		258		185
Fair value of awards vested	$	2,495	$	5,319	$	3,429

Schedule of Fully-vested Common Stocks Issued to Non-employee Directors

A summary of the fully-vested common stock the Company issued to its six non-employee directors, in connection with its non-employee director compensation plan, is as follows (in thousands):


	For the year ended December 31,
	2019		2018		2017
Awards issued	30		19		21
Grant date fair value of awards issued	$	450	$	400	$	438

Schedule of Non-vested Restricted Share Units

A summary of the Company's outstanding, non-vested restricted share units is presented below (in thousands, except per share amounts):


	For the year ended December 31,
	2019				2018					2017
	Units	Weighted Average Grant-Date Fair Value		Units	Weighted Average Grant-Date Fair Value		Units	Weighted Average Grant-Date Fair Value
Outstanding at beginning of period:	443	$	20.55	532	$	21.05	569	$	20.81
Granted	339	$	14.04	211	$	19.20	183	$	21.26
Released	(172)	$	20.38	(258)	$	20.48	(185)	$	20.49
Forfeited	(51)	$	17.71	(42)	$	20.52	(35)	$	21.45
Outstanding at end of period:	559	$	16.92	443	$	20.55	532	$	21.05

Schedule of Performance Shares Units Activity

A summary of the Company's PRSU activity is presented below (in thousands, except per share amounts):


	For the year ended December 31,
	2019				2018					2017
	Units	Weighted Average Grant-Date Fair Value		Units	Weighted Average Grant-Date Fair Value		Units	Weighted Average Grant-Date Fair Value
Outstanding at beginning of period:	277	$	17.80	278	$	17.00	290	$	16.01
Granted	190	$	13.63	129	$	19.46	128	$	20.42
Performance condition adjustments, net	(106)	$	13.77	(50)	$	19.48	(68)	$	20.55
Released	(101)	$	17.19	(68)	$	16.03	(72)	$	15.82
Forfeited	—	$	—	(12)	$	16.16	—	$	—
Outstanding at end of period:	260	$	16.77	277	$	17.80	278	$	17.00

- Definition

Tabular disclosure of an equity-based arrangement (such as stock or unit options and stock or unit awards) with an individual employee, which is generally an employment contract between the entity and a selected officer or key employee containing a promise by the employer to pay certain equity-based awards at future dates, sometimes including a period after retirement, upon compliance with stipulated requirements. This type of arrangement is distinguished from broader based employee benefit plans as it is usually tailored to the employee. Disclosure also typically includes the amount of related compensation expense recognized during the reporting period, the number of shares or units issued during the period under such arrangements, and the carrying amount as of the balance sheet date of the related liability.

+ References + Details

Income Taxes (Tables)

12 Months Ended

Dec. 31, 2019

Income Tax Disclosure [Abstract]

Schedule of Income Before Provision for Income Taxes

Income before provision for income taxes is as follows:


	For the year ended December 31,
	2019		2018		2017
Income (loss) before provision for income taxes from:
U.S. operations	$	7,334	$	9,853	$	(7,303)
Foreign operations	3,105		4,418		7,077
Earnings (loss) before income taxes	$	10,439	$	14,271	$	(226)

Schedule of Provision for Income Taxes

The provision for income taxes consists of the following:


	For the year ended December 31,
	2019		2018		2017
Current
Federal	$	2,712	$	790	$	3,558
States and local	519		533		39
Foreign	4,572		3,824		3,131
Reserve for uncertain tax positions	99		337		71
Total current	7,902		5,484		6,799
Deferred
Federal	315		2,966		(3,857)
States and local	(32)		399		(810)
Foreign	(4,095)		(2,089)		(159)
Total deferred	(3,812)		1,276		(4,826)
Net change in valuation allowance	269		666		(31)
Net deferred	(3,543)		1,942		(4,857)
Provision for income taxes	$	4,359	$	7,426	$	1,942

Schedule of Provision for Income Taxes Computed by Applying Statutory Federal Tax Rate

The provision for income taxes differs from the amount computed by applying the statutory federal tax rate to income tax as follows:


	For the years ended December 31,
	2019						2018						2017
Federal tax at statutory rate	$	2,192	21.0	%	$	2,997	21.0	%	$	(79)	35.0	%
State taxes, net of federal benefit	377		3.6	%	737		5.1	%	(502)		221.6	%
Foreign tax	982		9.4	%	807		5.7	%	217		(95.8)	%
Contingent consideration	29		0.3	%	(6)		—	%	(63)		27.7	%
Nondeductible compensation	1,581		15.2	%	183		1.3	%	—		—	%
US taxation of foreign earnings	213		2.0	%	228		1.6	%	—		—	%
Permanent differences	464		4.4	%	361		2.5	%	377		(166.4)	%
Transition tax, net of foreign tax credits	—		—	%	1,158		8.1	%	3,942		(1,741.4)	%
Federal tax rate change due to the Tax Act	—		—	%	87		0.6	%	(1,956)		864.0	%
Other	134		1.3	%	208		1.4	%	37		(16.3)	%
Change in valuation allowance	269		2.6	%	666		4.7	%	(31)		13.7	%
Impact of foreign tax rate changes	(1,882)		(18.0)	%	—		—	%	—		—	%
Total provision for income taxes	$	4,359	41.8	%	$	7,426	52.0	%	$	1,942	(857.9)	%

Schedule of Deferred Income Tax Assets and Liabilities

Deferred income tax attributes resulting from differences between financial accounting amounts and income tax basis of assets and liabilities are as follows:


	December 31,
	2019		2018
Deferred income tax assets
Allowance for doubtful accounts	$	1,186	$	951
Inventory	359		285
Intangible assets	1,795		1,230
Accrued expenses	4,421		4,408
Net operating loss carryforward	3,832		3,653
Finance lease obligations	1,067		731
Capital losses	463		462

Deferred share-based compensation	1,145		3,728
Interest carryforward	1,372		—
Right-of-use liability	11,891		—
Other	398		699
Deferred income tax assets	27,929		16,147
Valuation allowance	(4,067)		(3,999)
Net deferred income tax assets	23,862		12,148
Deferred income tax liabilities
Property and equipment	(6,485)		(7,597)
Goodwill	(10,652)		(9,302)
Intangible assets	(14,311)		(16,459)
Right-of-use asset	(11,891)		—
Other	(27)		(8)
Deferred income tax liabilities	(43,366)		(33,366)
Net deferred income taxes	$	(19,504)	$	(21,218)

Schedule of Changes in Company's Gross Unrecognized Tax Benefits, Excluding Interest and Penalties

The following table summarizes the changes in the Company’s gross unrecognized tax benefits, excluding interest and penalties:


	For the year ended December 31,
	2019		2018
Balance at beginning of period	$	723	$	156
Additions for tax positions related to the current fiscal period	—		1
Additions for tax positions related to prior years	217		341
Decreases for tax positions related to prior years	—		(2)
Current year acquisitions	—		270
Impact of foreign exchange fluctuation	13		—
Settlements	(465)		(4)
Reductions related to the expiration of statutes of limitations	(95)		(39)
Balance at end of period	$	393	$	723

Leases (Tables)

12 Months Ended

Dec. 31, 2019

Leases [Abstract]

Schedule of Supplemental Balance Sheet Information

The Company’s Consolidated Balance Sheets include the following related to operating leases as of December 31, 2019:


Leases	Classification	2019
Assets:
ROU assets	Other Assets	$	45,817

Liabilities:
ROU liability - current	Accrued and other current liabilities	$	10,133
ROU liability - long-term	Other liabilities	36,750
Total ROU liabilities		$	46,883

Schedule of Components of Lease Costs and Other Information Related to Leases

The components of lease costs for the year ended December 31, 2019 is as follows:


	Classification	2019
Finance lease expense:
Amortization of ROU assets	Depreciation and amortization	$	5,091
Interest on lease liabilities	Interest expense	824
Operating lease expense	Cost of revenue; Selling, general & administrative expenses	12,937
Short-term lease expense	Cost of revenue; Selling, general & administrative expenses	43
Variable lease expense	Cost of revenue; Selling, general & administrative expenses	1,220
Total		$	20,115

Additional information related to leases as of December 31, 2019 is as follows:


	2019
Cash paid for amounts included in the measurement of lease liabilities for finance leases:
Finance - financing cash flows	$	4,545
Finance - operating cash flows	824
Operating - operating cash flows	12,773
ROU assets obtained in the exchange for lease liabilities:
Finance leases	$	9,502
Operating leases	18,965
Weighted-average remaining lease term (in years):
Finance leases	5.9
Operating leases	6.2
Weighted-average discount rate:
Finance leases	5.8		%
Operating leases	5.9		%

Schedule of Maturities of Operating Lease Liabilities

Maturities of lease liabilities as of December 31, 2019 is as follows:


	Finance		Operating
2020	$	6,241	$	12,466
2021	4,255		10,347
2022	3,381		8,193
2023	2,489		6,790
2024	1,607		5,224
Thereafter	891		13,265
Total	18,864		56,285
Less: Present value discount	1,690		9,402
Lease liability	$	17,174	$	46,883

Schedule of Maturities of Finance Lease Liabilities

Maturities of lease liabilities as of December 31, 2019 is as follows:


	Finance		Operating
2020	$	6,241	$	12,466
2021	4,255		10,347
2022	3,381		8,193
2023	2,489		6,790
2024	1,607		5,224
Thereafter	891		13,265
Total	18,864		56,285
Less: Present value discount	1,690		9,402
Lease liability	$	17,174	$	46,883

Schedule of Future Minimum Lease Payments Under Noncancelable Operating Leases

As previously disclosed in its 2018 Annual Report, the following table presents the Company’s future minimum operating lease commitments as of December 31, 2018:


2019	$	10,939
2020	8,764
2021	6,327
2022	4,826
2023	4,239
Thereafter	10,667
Total	$	45,762

Segment Disclosure (Tables)

12 Months Ended

Dec. 31, 2019

Segment Reporting [Abstract]

Schedule of Financial Information by Segment

Selected financial information by segment for the periods shown was as follows (intercompany transactions are eliminated in Corporate and eliminations):


	For the year ended December 31,
	2019		2018		2017
Revenues
Services	$	595,130	$	574,619	$	543,565
International	144,271		153,448		144,265
Products and Systems	18,583		23,426		23,297
Corporate and eliminations	(9,398)		(9,139)		(10,157)
	$	748,586	$	742,354	$	700,970


	For the year ended December 31,
	2019		2018		2017
Gross profit
Services	$	165,513	$	151,974	$	139,160
International	43,145		45,464		38,974
Products and Systems	8,639		10,560		9,798
Corporate and eliminations	—		(124)		(220)
	$	217,297	$	207,874	$	187,712


	For the year ended December 31,
	2019		2018		2017
Income from operations
Services	$	49,593	$	47,126	$	46,677
International	5,856		3,953		3,537
Products and Systems	(529)		2,368		(16,991)
Corporate and eliminations	(30,783)		(31,226)		(29,063)
	$	24,137	$	22,221	$	4,160


	For the year ended December 31,
	2019		2018		2017
Depreciation and amortization
Services	$	28,854	$	24,079	$	21,649
International	8,285		8,846		7,768
Products and Systems	1,213		1,429		2,180
Corporate and eliminations	181		59		(214)
	$	38,533	$	34,413	$	31,383


	December 31,
	2019		2018
Intangible assets, net
Services	$	98,284	$	98,362
International	9,814		11,143
Products and Systems	1,181		1,438
Corporate and eliminations	258		452
	$	109,537	$	111,395


	December 31,
	2019		2018
Total assets
Services	$	537,518	$	523,506
International	153,380		146,535
Products and Systems	16,028		12,264
Corporate and eliminations	12,952		11,732
	$	719,878	$	694,037

Schedule of Revenue and Long-lived Assets by Geographic Area


	December 31,
	2019		2018
Long-lived assets
United States	$	233,679	$	230,140
Other Americas	181,550		177,628
Europe	75,325		76,781
	$	490,554	$	484,549


	December 31,
	2017
Revenue
United States	$	466,683
Other Americas	86,870
Europe	132,421
Asia-Pacific	14,996
	$	700,970

Selected Quarterly Financial Information (unaudited) (Tables)

12 Months Ended

Dec. 31, 2019

Quarterly Financial Information Disclosure [Abstract]

Schedule of Selected Quarterly Results of Operations

The following is a summary of the quarterly results of operations for calendar years 2019, 2018 and 2017.


Quarter ended	December 31, 2019		September 30, 2019		June 30, 2019		March 31, 2019
Revenues	$	178,991	$	192,192	$	200,616	$	176,787
Gross Profit	50,583		57,769		60,071		48,874
Income (loss) from operations	2,335		10,779		15,419		(4,396)
Net income (loss) attributable to Mistras Group, Inc.	$	829	$	3,093	$	7,431	$	(5,293)
Earnings (loss) per common share:
Basic	$	0.03	$	0.11	$	0.26	$	(0.19)
Diluted	$	0.03	$	0.11	$	0.26	$	(0.19)


Quarter ended	December 31, 2018		September 30, 2018		June 30, 2018		March 31, 2018
Revenues	$	180,762	$	182,169	$	191,793	$	187,630
Gross Profit	52,315		52,332		55,083		48,144
Income from operations	2,502		3,017		10,304		6,398
Net income (loss) attributable to Mistras Group, Inc.	$	(1,061)	$	(1,011)	$	6,000	$	2,908
Earnings (loss) per common share:
Basic	$	(0.04)	$	(0.04)	$	0.21	$	0.10
Diluted	$	(0.04)	$	(0.04)	$	0.20	$	0.10


Quarter ended	December 31, 2017		September 30, 2017		June 30, 2017		March 31, 2017
Revenues	$	187,643	$	179,570	$	170,439	$	163,318
Gross Profit	50,319		47,897		46,343		43,153
Income (loss) from operations	6,282		(10,375)		5,003		3,250
Net income (loss) attributable to Mistras Group, Inc.	$	884	$	(6,968)	$	2,217	$	1,692
Earnings (loss) per common share:
Basic	$	0.03	$	(0.25)	$	0.08	$	0.06
Diluted	$	0.03	$	(0.25)	$	0.07	$	0.06

Summary of Significant Accounting Policies and Practices (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2019
Concentration Risk [Line Items]
Foreign currency (gains) and losses	$ (500)	$ 1,300	$ 600
Minimum amount of excess self-insurance claims paid to reduce exposure	300
Operating lease, right-to-use asset	45,817
Lease liability	46,883
ASC 842
Concentration Risk [Line Items]
Operating lease, right-to-use asset				$ 38,000
Lease liability				$ 38,000
Selling, General and Administrative Expenses
Concentration Risk [Line Items]
Advertising expense	$ 2,100	$ 2,100	$ 1,900
Software/Technology
Concentration Risk [Line Items]
Useful Life (Years)	3 years
Customer One \| Customer concentration risk \| Revenues
Concentration Risk [Line Items]
Percentage of concentration risk			11.00%

Revenue - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
Revenue - Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue recognized that was included in contract liability balance at the beginning of the year	$ 4.3	$ 5.3
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction period	1 year

Earnings per Share - Computations of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended												12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Basic earnings (loss) per share:
Net income (loss) attributable to Mistras Group, Inc.	$ 829	$ 3,093	$ 7,431	$ (5,293)	$ (1,061)	$ (1,011)	$ 6,000	$ 2,908	$ 884	$ (6,968)	$ 2,217	$ 1,692	$ 6,060	$ 6,836	$ (2,175)
Denominator
Weighted average common shares outstanding (in shares)													28,740	28,406	28,422
Basic earnings (loss) per share (in dollars per share)	$ 0.03	$ 0.11	$ 0.26	$ (0.19)	$ (0.04)	$ (0.04)	$ 0.21	$ 0.10	$ 0.03	$ (0.25)	$ 0.08	$ 0.06	$ 0.21	$ 0.24	$ (0.08)
Denominator
Weighted average common shares outstanding (in shares)													28,740	28,406	28,422
Dilutive effect of stock options outstanding (in shares)													98	683	0
Dilutive effect of restricted stock units outstanding (in shares)													208	338	0
Weighted average common shares outstanding, diluted (in shares)													29,046	29,427	28,422
Diluted earnings (loss) per share (in dollars per share)	$ 0.03	$ 0.11	$ 0.26	$ (0.19)	$ (0.04)	$ (0.04)	$ 0.20	$ 0.10	$ 0.03	$ (0.25)	$ 0.07	$ 0.06	$ 0.21	$ 0.23	$ (0.08)

Earnings per Share - Potential Common Shares Excluded From Computation of Diluted Earnings (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potential common shares excluded from computation of diluted earnings per share (in shares)	47	6	1,163
RSUs and PSUs
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potential common shares excluded from computation of diluted earnings per share (in shares)	42	1	353
Potential common shares excluded from computation of diluted earnings per share due to net loss for the period (in shares)			351
Stock Options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potential common shares excluded from computation of diluted earnings per share (in shares)	5	5	810
Potential common shares excluded from computation of diluted earnings per share due to net loss for the period (in shares)			805

Accounts Receivable (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Receivables [Abstract]
Trade accounts receivable	$ 144,282	$ 152,511
Allowance for doubtful accounts	(8,285)	(4,187)
Accounts receivable, net	$ 135,997	$ 148,324

Accounts Receivable - Narrative (Details) - USD ($)	1 Months Ended	3 Months Ended					12 Months Ended
Accounts Receivable - Narrative (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Receivables [Abstract]
Unbilled revenues	$ 22,200,000	$ 22,200,000				$ 16,100,000	$ 22,200,000	$ 16,100,000
Concentration Risk [Line Items]
Bad debt provision. net of (recoveries)							3,038,000	650,000	$ 1,200,000
Accounts receivable, net	135,997,000	135,997,000				148,324,000	135,997,000	$ 148,324,000
Renewable Energy Industry Customer \| Services
Concentration Risk [Line Items]
Bad debt provision. net of (recoveries)		0	$ 0	$ (1,000,000.0)	$ 5,700,000	$ 700,000
Allowance for doubtful accounts recovery				$ 1,700,000	200,000
Texas Customer
Concentration Risk [Line Items]
Bad debt provision. net of (recoveries)					$ 1,400,000
Accounts receivable, net	1,400,000	$ 1,400,000					$ 1,400,000
Claim filed to recover past due receivables	$ 1,400,000

Inventories (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Inventory Disclosure [Abstract]
Raw materials	$ 5,314	$ 6,975
Work in progress	1,549	1,019
Finished goods	3,957	2,640
Consumable supplies	2,593	2,419
Inventories	$ 13,413	$ 13,053

Property, Plant and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment, net
Property, plant and equipment, gross	$ 270,410	$ 251,433
Accumulated depreciation and amortization	(171,803)	(157,538)
Property, plant and equipment, net	98,607	93,895
Depreciation expense	24,200	24,200	$ 22,400
Land
Property, Plant and Equipment, net
Property, plant and equipment, gross	2,672	2,680
Building and improvements
Property, Plant and Equipment, net
Property, plant and equipment, gross	$ 24,537	24,338
Building and improvements \| Minimum
Property, Plant and Equipment, net
Useful Life	30 years
Building and improvements \| Maximum
Property, Plant and Equipment, net
Useful Life	40 years
Office furniture and equipment
Property, Plant and Equipment, net
Property, plant and equipment, gross	$ 17,227	16,170
Office furniture and equipment \| Minimum
Property, Plant and Equipment, net
Useful Life	5 years
Office furniture and equipment \| Maximum
Property, Plant and Equipment, net
Useful Life	8 years
Machinery and equipment
Property, Plant and Equipment, net
Property, plant and equipment, gross	$ 225,974	$ 208,245
Machinery and equipment \| Minimum
Property, Plant and Equipment, net
Useful Life	5 years
Machinery and equipment \| Maximum
Property, Plant and Equipment, net
Useful Life	7 years

Acquisitions and Disposition - Acquisitions Narrative (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($) Entity	Dec. 31, 2018 USD ($) Entity
Business Acquisition [Line Items]
Period over which potential acquisition-related contingent consideration would be payable	2 years 9 months 18 days
Acquiree That Provides Pipeline Integrity Management Software
Business Acquisition [Line Items]
Number of completed acquisitions \| Entity	1
Cash consideration paid	$ 4,380
Potential acquisition-related contingent consideration, high end of range	4,300
Revenue for the period subsequent to closing of the transaction	$ 2,000
Period over which potential acquisition-related contingent consideration would be payable	3 years
Aggregate income from operation for the period subsequent to closing of transaction	$ 400
Fair value of intangibles	3,594
Fair value of property, plant and equipment	$ 65
Minimum
Business Acquisition [Line Items]
Amortization period of intangible assets acquired	1 year
Maximum
Business Acquisition [Line Items]
Amortization period of intangible assets acquired	18 years
Canada and U.S.
Business Acquisition [Line Items]
Number of completed acquisitions \| Entity		1
Cash consideration paid		$ 143,100
Percentage of equity interest acquired		100.00%
Fair value of intangibles		$ 59,600
Adjustment to intangibles	$ 4,800
Fair value of property, plant and equipment		8,500
Adjustment to property, plant and equipment	700
Fair value of debt and other liabilities		5,000
Adjustment to debt and other liabilities	400
Fair value of deferred tax liability		$ 12,700
Adjustment to deferred tax liability	$ 1,400

Acquisitions and Disposition - Estimated Fair Value of the Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Estimated fair value of the assets acquired and liabilities assumed
Goodwill	$ 282,410	$ 279,259	$ 203,438
Acquiree That Provides Pipeline Integrity Management Software
Consideration transferred:
Cash paid	4,380
Working capital adjustments	(152)
Fair value of contingent consideration	1,142
Total consideration	5,370
Estimated fair value of the assets acquired and liabilities assumed
Current net assets	142
Other assets	34
Property, plant and equipment	65
Intangibles	3,594
Goodwill	1,535
Net assets acquired	$ 5,370

Acquisitions and Disposition - Dispositions Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Sep. 30, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on sale of subsidiary	$ 0	$ 2,384	$ 0
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| Disposal of Foreign Subsidiaries \| Products and Systems
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration received on sale of subsidiary				$ 4,300
Gain on sale of subsidiary		$ 2,400
Term of agreement to purchase products from buyer on sale of subsidiary	3 years	3 years
Amount of purchase agreement with buyer on sale of subsidiary	$ 2,300	$ 2,300

Acquisitions and Disposition - Acquisition-Related Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Business Combinations [Abstract]
Due diligence, professional fees and other transaction costs	$ 364	$ 1,248	$ 945
Adjustments to fair value of contingent consideration liabilities	511	(716)	(463)
Acquisition-related expense, net	$ 875	$ 532	$ 482

Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
Goodwill (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Changes in the carrying amount of goodwill
Balance at the beginning of the period	$ 279,259	$ 203,438
Goodwill acquired during the year	1,535	83,163
Adjustments to preliminary purchase price allocations	(2,332)	(1,977)
Foreign currency translation	3,948	(5,365)
Balance at the end of the period	282,410	279,259
Services
Changes in the carrying amount of goodwill
Balance at the beginning of the period	243,476	165,801
Goodwill acquired during the year	1,535	83,163
Adjustments to preliminary purchase price allocations	(2,332)	(1,977)
Foreign currency translation	4,536	(3,511)
Balance at the end of the period	247,215	243,476
International
Changes in the carrying amount of goodwill
Balance at the beginning of the period	35,783	37,637
Goodwill acquired during the year	0	0
Adjustments to preliminary purchase price allocations	0	0
Foreign currency translation	(588)	(1,854)
Balance at the end of the period	35,195	35,783
Products and Systems
Changes in the carrying amount of goodwill
Balance at the beginning of the period	0	0
Goodwill acquired during the year	0	0
Adjustments to preliminary purchase price allocations	0	0
Foreign currency translation	0	0
Balance at the end of the period	$ 0	$ 0

Goodwill - Narrative (Details) - USD ($)	Oct. 01, 2019	Dec. 31, 2019	Dec. 31, 2018
Goodwill
Goodwill impairment charge	$ 0
Cumulative goodwill impairment		$ 23,100,000	$ 23,100,000
Products and Systems
Goodwill
Cumulative goodwill impairment		13,200,000	13,200,000
International
Goodwill
Cumulative goodwill impairment		$ 9,900,000	$ 9,900,000

Intangible Assets - Gross Carrying Amount and Accumulated Amortization (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Gross Amount	$ 215,383	$ 202,774
Accumulated Amortization	(105,846)	(91,379)
Net Carrying Amount	109,537	111,395
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Amount	113,861	112,624
Accumulated Amortization	(67,853)	(60,993)
Net Carrying Amount	$ 46,008	51,631
Customer relationships \| Minimum
Finite-Lived Intangible Assets [Line Items]
Useful Life (Years)	5 years
Customer relationships \| Maximum
Finite-Lived Intangible Assets [Line Items]
Useful Life (Years)	18 years
Software/Technology
Finite-Lived Intangible Assets [Line Items]
Useful Life (Years)	3 years
Gross Amount	$ 77,914	67,240
Accumulated Amortization	(18,756)	(13,319)
Net Carrying Amount	$ 59,158	53,921
Software/Technology \| Minimum
Finite-Lived Intangible Assets [Line Items]
Useful Life (Years)	3 years
Software/Technology \| Maximum
Finite-Lived Intangible Assets [Line Items]
Useful Life (Years)	15 years
Covenants not to compete
Finite-Lived Intangible Assets [Line Items]
Gross Amount	$ 12,795	12,593
Accumulated Amortization	(11,630)	(10,825)
Net Carrying Amount	$ 1,165	1,768
Covenants not to compete \| Minimum
Finite-Lived Intangible Assets [Line Items]
Useful Life (Years)	2 years
Covenants not to compete \| Maximum
Finite-Lived Intangible Assets [Line Items]
Useful Life (Years)	5 years
Other
Finite-Lived Intangible Assets [Line Items]
Gross Amount	$ 10,813	10,317
Accumulated Amortization	(7,607)	(6,242)
Net Carrying Amount	$ 3,206	$ 4,075
Other \| Minimum
Finite-Lived Intangible Assets [Line Items]
Useful Life (Years)	2 years
Other \| Maximum
Finite-Lived Intangible Assets [Line Items]
Useful Life (Years)	12 years

Intangible Assets - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Amortization of expense of intangible assets	$ 14.3	$ 10.2	$ 9.0
Software/Technology
Finite-Lived Intangible Assets [Line Items]
Amortization of expense of intangible assets	$ 5.6	$ 1.4	$ 1.2

Intangible Assets - Expected Amortization Expense (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
2020	$ 13,864
2021	12,474
2022	12,042
2023	10,987
2024	9,870
Thereafter	50,300
Net Carrying Amount	$ 109,537	$ 111,395

Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Payables and Accruals [Abstract]
Accrued salaries, wages and related employee benefits	$ 30,072	$ 29,959
Contingent consideration	2,614	1,687
Accrued workers' compensation and health benefits	4,467	5,086
Deferred revenues	5,860	5,046
Right-of-use liability - Operating	10,133
Pension accrual	2,519	5,585
Other accrued expenses	25,724	26,532
Total accrued expenses and other current liabilities	$ 81,389	$ 73,895

Long-Term Debt - Schedule of Long-Term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Total debt	$ 254,713	$ 290,620
Less: Current portion	(6,593)	(6,833)
Long-term debt, net of current portion	248,120	283,787
Senior credit facility
Debt Instrument [Line Items]
Total debt	151,773	181,656
Senior credit facility \| Senior Secured Term Loan
Debt Instrument [Line Items]
Total debt	94,919	99,897
Debt issuance costs	100
Notes payable
Debt Instrument [Line Items]
Total debt	0	68
Other
Debt Instrument [Line Items]
Total debt	$ 8,021	$ 8,999

Long-Term Debt - Narrative (Details)		12 Months Ended
Long-Term Debt - Narrative (Details)	Mar. 09, 2020 USD ($) quarter	Dec. 31, 2019 USD ($) quarter	Dec. 31, 2018 USD ($)
Long-Term Debt
Other debt outstanding		$ 254,713,000	$ 290,620,000
Senior credit facility
Long-Term Debt
Maximum borrowing capacity		300,000,000
Higher borrowing capacity option		450,000,000
Maximum borrowing capacity in non-U.S. Dollar currencies		100,000,000
Maximum amount available for the issuance of letters of credit		20,000,000
Long-term Line of Credit		246,700,000
Outstanding letters of credit		3,700,000
Capitalized debt modification costs		800,000
Non-recurring charges threshold used for calculation of funded debt leverage ratio		$ 10,000,000
Number of consecutive fiscal quarters used for calculating funded debt leverage ratio \| quarter		4
Funded debt leverage ratio at which the entity will bear the maximum interest rate margin		3.25
Additional interest rate margin if funded debt leverage ratio exceeds threshold (as a percent)		2.00%
Preceding period used for calculating interest coverage ratio		12 months
Number of quarters for temporarily increase in funded debt leverage ratio following business acquisitions \| quarter		4
Other debt outstanding		$ 151,773,000	181,656,000
Senior credit facility \| Subsequent Event
Long-Term Debt
Number of quarters for temporarily increase in funded debt leverage ratio following business acquisitions \| quarter	2
Minimum credit exposure percentage	0.6666
Aggregate consideration for all acquisitions	$ 5,000,000
Senior credit facility \| Minimum
Long-Term Debt
Funded debt leverage ratio for additional interest payment		3.50
Interest coverage ratio		1.25
Funded debt leverage ratio temporarily increase due to business acquisitions		3.5
Senior credit facility \| Maximum
Long-Term Debt
Funded debt leverage ratio at which the entity will have the benefit of lowest interest margin		1.0
Funded debt leverage ratio for additional interest payment		4.25
Funded debt leverage ratio temporarily increase due to business acquisitions		4.0
Senior credit facility \| Maximum \| Subsequent Event
Long-Term Debt
Funded debt leverage ratio temporarily increase due to business acquisitions	3.0
Senior credit facility \| Maximum \| Subsequent Event \| For quarters ended December 31, 2019 through June 30, 2020
Long-Term Debt
Funded debt leverage ratio temporarily increase due to business acquisitions	4.0
Senior credit facility \| Maximum \| Subsequent Event \| For quarter ending September 30, 2020
Long-Term Debt
Funded debt leverage ratio temporarily increase due to business acquisitions	3.75
Senior credit facility \| Maximum \| Subsequent Event \| For quarter ending December 31, 2020 and or each quarter end thereafter
Long-Term Debt
Funded debt leverage ratio temporarily increase due to business acquisitions	3.5
Senior credit facility \| LIBOR \| Minimum
Long-Term Debt
Margin rate (as a percent)		1.00%
Senior credit facility \| LIBOR \| Maximum
Long-Term Debt
Margin rate (as a percent)		2.00%
Senior credit facility \| LIBOR \| Maximum \| Subsequent Event
Long-Term Debt
Margin rate (as a percent)	2.25%
Senior credit facility \| Base rate \| Minimum
Long-Term Debt
Margin rate (as a percent)		(1.25%)
Senior credit facility \| Base rate \| Maximum
Long-Term Debt
Margin rate (as a percent)		(0.375%)
Senior credit facility \| Term A Loan Facility
Long-Term Debt
Maximum borrowing capacity		$ 100,000,000
Other debt outstanding		94,919,000	99,897,000
Other
Long-Term Debt
Other debt outstanding		8,021,000	$ 8,999,000
Other \| Minimum
Long-Term Debt
Monthly debt payments		$ 1,000
Interest rate, minimum (as a percent)		0.40%
Other \| Maximum
Long-Term Debt
Monthly debt payments		$ 18,000
Interest rate, minimum (as a percent)		6.20%

Long-Term Debt - Scheduled Principal Payments (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Debt Disclosure [Abstract]
2020	$ 6,593
2021	8,864
2022	11,210
2023	225,343
2024	890
Thereafter	1,813
Total debt	$ 254,713	$ 290,620

Fair Value Measurements (Details) - USD ($) $ in Thousands	12 Months Ended
Fair Value Measurements (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Contingent Consideration Liability [Roll Forward]
Revaluation	$ 511	$ (716)	$ (463)
Level 3
Contingent Consideration Liability [Roll Forward]
Contingent consideration, beginning balance	2,365	5,508
Acquisitions	1,142	0
Payments	(852)	(2,277)
Accretion of liability	92	175
Revaluation	419	(891)
Foreign currency translation	50	(150)
Contingent consideration, ending balance	$ 3,216	$ 2,365	$ 5,508

Share-Based Compensation - Long-term Incentive Plans (Details)	12 Months Ended
	Dec. 31, 2019 plan shares	Dec. 31, 2018 shares	Dec. 31, 2017 shares	Dec. 31, 2016 shares
Share-based compensation
Number of employee stock ownership plans \| plan	2
Stock options outstanding (in shares)	5,000	2,105,000	2,130,000	2,167,000
2007 Plan and 2009 Plan
Share-based compensation
Number of awards authorized for grants (in shares)	0
2016 Plan
Share-based compensation
Number of awards authorized for grants (in shares)	1,700,000
Number of awards available for future grants (in shares)	718,000
Stock options outstanding (in shares)	5,000
Unvested restricted stock units outstanding (in shares)	101,000

Share-Based Compensation - Stock Options Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based compensation
Stock options granted (in shares)	0	0	0
Unrecognized compensation costs related to stock options	$ 0
Stock Options
Share-based compensation
Recognized share-based compensation expense	$ 0	$ 0	$ 0

Share-Based Compensation - Cash Proceeds and Intrinsic Value of Stock Options Exercised (Details) - USD ($) $ in Thousands, shares in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Payment Arrangement [Abstract]
Cash proceeds from options exercised	$ 32	$ 273	$ 275
Aggregate intrinsic value of options exercised	$ 4,530	$ 277	$ 580
Options exercised, net (in shares)	2.1

Share-Based Compensation - Stock Option Activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Common Stock Options (shares)
Outstanding at beginning of year: (in shares)	2,105,000	2,130,000	2,167,000
Granted (in shares)	0	0	0
Exercised (in shares)	(2,093,000)	(25,000)	(37,000)
Expired or forfeited (in shares)	(7,000)	0	0
Outstanding at end of year: (in shares)	5,000	2,105,000	2,130,000
Weighted Average Exercise Price (in dollar per share)
Outstanding at beginning of year: (in dollars per share)	$ 13.47	$ 13.43	$ 13.33
Granted (in dollars per share)	0	0	0
Exercised (in dollars per share)	13.45	10.75	7.39
Expired or forfeited (in dollars per share)	10.00	0	0
Outstanding at end of year: (in dollars per share)	$ 22.35	$ 13.47	$ 13.43

Share-Based Compensation - Stock Options Outstanding and Exercisable (Details) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($) $ / shares shares
Aggregate Intrinsic Value
Options Outstanding (in dollars) \| $	$ 0
Options Exercisable (in dollars) \| $	$ 0
$22.35
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Limit (in dollars per share)	$ 22.35
Range of Exercise Prices, Upper Limit (in dollars per share)	$ 22.35
Options Outstanding
Total Options Outstanding (in shares) \| shares	5
Weighted Average Remaining Life (Years)	2 years 2 months 12 days
Weighted Average Exercise Price (in dollars per share)	$ 22.35
Options Exercisable
Number Exercisable (in shares) \| shares	5
Weighted Average Exercise Price (in dollars per share)	$ 22.35

Share-Based Compensation - Restricted Stock Units Awards Narrative (Details) - Restricted Stock Units - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based compensation
Recognized share-based compensation expense	$ 4.0	$ 4.2	$ 4.5
Unrecognized compensation cost, net of estimated forfeitures, related to restricted stock unit awards	$ 6.7
Weighted-average period over which unrecognized compensation cost is expected to be recognized	2 years 4 months 24 days

Share-Based Compensation - Vesting Activity of Restricted Stock Unit Awards (Details) - Restricted Stock Units - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based compensation
Restricted stock awards vested	172	258	185
Fair value of awards vested	$ 2,495	$ 5,319	$ 3,429

Share-Based Compensation - Common Stock Issued to Non-employee Directors (Details) - Non-employee directors - Common Stock shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($) director shares	Dec. 31, 2018 USD ($) shares	Dec. 31, 2017 USD ($) shares
Share-based compensation
Number of non-employee directors to whom fully vested common stock is granted \| director	6
Awards issued (in shares) \| shares	30	19	21
Grant date fair value of awards issued (in dollars per share) \| $	$ 450	$ 400	$ 438

Share-Based Compensation - Restricted Stock Unit Awards Outstanding (Details) - Restricted Stock Units - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding at beginning of period: (in shares)	443	532	569
Granted (in shares)	339	211	183
Released (in shares)	(172)	(258)	(185)
Forfeited (in shares)	(51)	(42)	(35)
Outstanding at end of period: (in shares)	559	443	532
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Outstanding at beginning of period: (in dollars per share)	$ 16.92	$ 20.55	$ 21.05	$ 20.81
Granted (in dollars per share)	14.04	19.20	21.26
Released (in dollars per share)	20.38	20.48	20.49
Forfeited (in dollars per share)	17.71	20.52	21.45
Outstanding at end of period: (in dollars per share)	$ 16.92	$ 20.55	$ 21.05	$ 20.81

Share-Based Compensation - Performance Restricted Stock Units Narrative (Details) - USD ($) shares in Thousands, $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
PRSUs
Share-based compensation
Number of restricted stocks units granted (in shares)			190	129	128
Unvested restricted stock units outstanding (in shares)			260	277	278	290
PRSUs \| Executive and senior officers
Share-based compensation
Unvested restricted stock units outstanding (in shares)			260
Recognized share-based compensation expense			$ 1.3	$ 1.5	$ 1.7
Unrecognized compensation cost, net of estimated forfeitures, related to restricted stock unit awards			$ 1.7
Weighted-average period over which unrecognized compensation cost is expected to be recognized			2 years
Income tax benefit recognized on share-based compensation			$ 2.1	1.0	$ 2.2
PRSUs \| Fiscal 2019 Grants \| Executive and senior officers
Share-based compensation
Increase (reduction) in number of shares authorized for grant (in shares)			(103)
Unvested restricted stock units outstanding (in shares)			29
Aggregate liability related to performance shares outstanding			$ 0.1
PRSUs \| Fiscal 2018 Grants
Share-based compensation
Increase (reduction) in number of shares authorized for grant (in shares)	(3)
PRSUs \| Fiscal 2018 Grants \| Accrued Expenses and Other Current Liabilities
Share-based compensation
Aggregate liability related to performance shares outstanding				$ 0.1
PRSUs \| Fiscal 2018 Grants \| Executive and senior officers
Share-based compensation
Number of restricted stocks units granted (in shares)				129
Increase (reduction) in number of shares authorized for grant (in shares)				(54)
Unvested restricted stock units outstanding (in shares)				22
PRSUs \| Fiscal 2017 Grants \| Executive and senior officers
Share-based compensation
Number of restricted stocks units granted (in shares)					128
Increase (reduction) in number of shares authorized for grant (in shares)		4			(65)
PRSUs with three years performance condition \| Executive and senior officers
Share-based compensation
Payout performance period			1 year
Vesting period			4 years
Requisite service period			5 years

Share-Based Compensation - Performance Restricted Stock Units Activity (Details) - PRSUs - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding at beginning of period: (in shares)	277	278	290
Granted (in shares)	190	129	128
Performance condition adjustments, net (in shares)	(106)	(50)	(68)
Released (in shares)	(101)	(68)	(72)
Forfeited (in shares)	0	(12)	0
Outstanding at end of period: (in shares)	260	277	278
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Outstanding at beginning of period: (in dollars per share)	$ 16.77	$ 17.80	$ 17.00	$ 16.01
Granted (in dollars per share)	13.63	19.46	20.42
Performance condition adjustments, net (in dollars per share)	13.77	19.48	20.55
Released (in dollars per share)	17.19	16.03	15.82
Forfeited (in dollars per share)	0	16.16	0
Outstanding at end of period: (in dollars per share)	$ 16.77	$ 17.80	$ 17.00	$ 16.01

Income Taxes - Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income (loss) before provision for income taxes from:
U.S. operations	$ 7,334	$ 9,853	$ (7,303)
Foreign operations	3,105	4,418	7,077
Income (loss) before provision for income taxes	10,439	14,271	(226)
Current
Federal	2,712	790	3,558
States and local	519	533	39
Foreign	4,572	3,824	3,131
Reserve for uncertain tax positions	99	337	71
Total current	7,902	5,484	6,799
Deferred
Federal	315	2,966	(3,857)
States and local	(32)	399	(810)
Foreign	(4,095)	(2,089)	(159)
Total deferred	(3,812)	1,276	(4,826)
Net change in valuation allowance	269	666	(31)
Net deferred	(3,543)	1,942	(4,857)
Provision for income taxes	$ 4,359	$ 7,426	$ 1,942

Income Taxes - Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Federal tax at statutory rate	$ 2,192	$ 2,997	$ (79)
State taxes, net of federal benefit	377	737	(502)
Foreign tax	982	807	217
Contingent consideration	29	(6)	(63)
Nondeductible compensation	1,581	183	0
US taxation of foreign earnings	464	228	0
Permanent differences	213	361	377
Transition tax, net of foreign tax credits	0	1,158	3,942
Federal tax rate change due to the Tax Act	0	87	(1,956)
Other	134	208	37
Change in valuation allowance	269	666	(31)
Impact of foreign tax rate changes	(1,882)	0	0
Provision for income taxes	$ 4,359	$ 7,426	$ 1,942
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Federal tax at statutory rate	21.00%	21.00%	35.00%
State taxes, net of federal benefit	3.60%	5.10%	221.60%
Foreign tax	9.40%	5.70%	(95.80%)
Contingent consideration	0.30%	0.00%	27.70%
Nondeductible compensation	15.20%	1.30%	0.00%
US taxation of foreign earnings	4.40%	1.60%	0.00%
Permanent differences	2.00%	2.50%	(166.40%)
Transition tax, net of foreign tax credits	0.00%	8.10%	(1741.40%)
Federal tax rate change due to the Tax Act	0	0.006	8.640
Other	1.30%	1.40%	(16.30%)
Change in valuation allowance	2.60%	4.70%	13.70%
Impact of foreign tax rate changes	(18.00%)	0.00%	0.00%
Provision for income taxes	41.80%	52.00%	(857.90%)

Income Taxes - Narrative (Details) - USD ($)	3 Months Ended												7 Months Ended	12 Months Ended
Income Taxes - Narrative (Details) - USD ($)	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating Loss Carryforwards [Line Items]
Income tax expense related to Tax Act																$ 1,900,000
Provisional one-time benefit as result of re-measurement of deferred tax assets and liabilities																2,300,000
Provisional one-time expense due to imposition of transition tax																3,900,000
Provisional tax expense attributable to reduction in deferred tax assets																300,000
Complete accounting, income tax expense for effects of Tax Act															$ 1,700,000
Complete accounting, tax expense due to increase of net deferred tax liabilities															100,000
Complete accounting, tax expense due to transition tax															1,300,000
Tax expense due to changes made to executive compensation rules pursuant Tax Act															400,000
Deferred tax assets valuation allowance	$ 4,067,000				$ 3,999,000									$ 4,067,000	3,999,000
Unrecognized tax benefits	393,000				723,000				$ 156,000					393,000	723,000	156,000
Unrecognized tax benefits that would favorably affect the effective tax rate, if recognized	100,000				100,000									100,000	100,000
Expected decrease in unrecognized tax benefits (less than)	100,000													100,000
Net income (loss) of foreign subsidiaries	829,000	$ 3,093,000	$ 7,431,000	$ (5,293,000)	(1,061,000)	$ (1,011,000)	$ 6,000,000	$ 2,908,000	$ 884,000	$ (6,968,000)	$ 2,217,000	$ 1,692,000		6,060,000	6,836,000	$ (2,175,000)
Recognized a deferred tax liability on undistributed international earnings (losses) of foreign subsidiaries	0													0
Unrecorded deferred tax liability related to undistributed international earnings	1,100,000													1,100,000
Federal \| Internal Revenue Service (IRS)
Operating Loss Carryforwards [Line Items]
Net operating losses	200,000													200,000
State
Operating Loss Carryforwards [Line Items]
Net operating losses	7,200,000													7,200,000
Foreign
Operating Loss Carryforwards [Line Items]
Net operating losses	12,300,000													12,300,000
Net income (loss) of foreign subsidiaries													$ 4,100,000	2,500,000	2,000,000.0
Foreign \| Expiration Period 2025-2038
Operating Loss Carryforwards [Line Items]
Net operating losses	600,000													600,000
Foreign \| Canadian Province of Alberta
Operating Loss Carryforwards [Line Items]
Favorable impact in tax rate from revaluation of net assets and liabilities due to enactment of foreign Job Creation Tax Cut														1,900,000
State and Foreign
Operating Loss Carryforwards [Line Items]
Increase in deferred tax assets valuation allowance														100,000
State and Foreign \| Disposal Group, Held-for-sale or Disposed of by Sale, Not Discontinued Operations \| Disposal of Foreign Subsidiaries
Operating Loss Carryforwards [Line Items]
Deferred tax assets valuation allowance	$ 4,100,000				$ 4,000,000.0									$ 4,100,000	$ 4,000,000.0

Income Taxes - Deferred Income Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred income tax assets
Allowance for doubtful accounts	$ 1,186	$ 951
Inventory	359	285
Intangible assets	1,795	1,230
Accrued expenses	4,421	4,408
Net operating loss carryforward	3,832	3,653
Finance lease obligations	1,067	731
Capital losses	463	462
Deferred share-based compensation	1,145	3,728
Interest carryforward	1,372	0
Right-of-use liability	11,891
Other	398	699
Deferred income tax assets	27,929	16,147
Valuation allowance	(4,067)	(3,999)
Net deferred income tax assets	23,862	12,148
Deferred income tax liabilities
Property and equipment	(6,485)	(7,597)
Goodwill	(10,652)	(9,302)
Intangible assets	(14,311)	(16,459)
Right-of-use asset	(11,891)
Other	(27)	(8)
Deferred income tax liabilities	(43,366)	(33,366)
Net deferred income taxes	$ (19,504)	$ (21,218)

Income Taxes - Changes in Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at beginning of period	$ 723	$ 156
Additions for tax positions related to the current fiscal period	0	1
Additions for tax positions related to prior years	217	341
Decreases for tax positions related to prior years	0	(2)
Current year acquisitions	0	270
Impact of foreign exchange fluctuation	13	0
Settlements	(465)	(4)
Reductions related to the expiration of statutes of limitations	(95)	(39)
Balance at end of period	$ 393	$ 723

Employee Benefit Plans (Details) - USD ($)	12 Months Ended
Employee Benefit Plans (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
401(k) savings plan
Minimum age for employees to contribute catch up contributions under IRS limits	50 years
Continuous service period required for eligibility of employees to participate under the plan	3 months
Maximum Company match amount of employee contributions matched up to 6% of annual compensation (as a percent)	50.00%
Maximum percentage of employee's annual compensation for which the company contributes a matching contribution (as a percent)	6.00%
Vesting period for employer matching contribution	5 years
Contribution under 401(k) savings plan	$ 4,100,000	$ 3,900,000	$ 3,700,000
Multiemployer Plans, Pension \| Boilermakers and Pipefitters Plans
Multiemployer Defined Benefit Pension Plans
Multiemployer plan funded status	Between 65 and less than 80 percent
Multiemployer plan, amount of Company's contributions	$ 0	$ 600,000	$ 2,400,000

Related Party Transactions (Details) $ in Millions	12 Months Ended
Related Party Transactions (Details) $ in Millions	Dec. 31, 2019 USD ($) director
Shareholder and officer
Related Party Transactions
Total rent payments \| $	$ 1.0
Non-employee directors \| Capital Management Enterprise (“CME”) \| Consulting Services
Related Party Transactions
Number of non-employee director \| director	1

Leases - Supplemental Balance Sheet Information (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Assets:
ROU assets	$ 45,817
Liabilities:
ROU liability - current	10,133
ROU liability - long-term	36,750
Total ROU liabilities	$ 46,883

Leases - Narrative (Details) $ in Thousands	12 Months Ended
Leases - Narrative (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Lessee, Lease, Description [Line Items]
ROU operating lease liabilities	$ 46,883
Operating rental payments	12,773
Operating Lease Arrangement
Lessee, Lease, Description [Line Items]
ROU operating lease liabilities	4,500
Operating rental payments	1,000
ROU finance lease assets	$ 19,200

Leases - Components of Lease Costs (Details) $ in Thousands	12 Months Ended
Leases - Components of Lease Costs (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Finance lease expense:
Amortization of ROU assets	$ 5,091
Interest on lease liabilities	824
Operating lease expense	12,937
Short-term lease expense	43
Variable lease expense	1,220
Total	$ 20,115

Leases - Other Information Related to Leases (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Cash paid for amounts included in the measurement of lease liabilities for finance leases:
Finance - financing cash flows	$ 4,545
Finance - operating cash flows	824
Operating - operating cash flows	12,773
ROU assets obtained in the exchange for lease liabilities:
Finance leases	9,502
Operating leases	$ 18,965
Weighted-average remaining lease term (in years):
Finance leases	5 years 10 months 24 days
Operating leases	6 years 2 months 12 days
Weighted-average discount rate:
Finance leases	5.80%
Operating leases	5.90%

Leases - Maturity of Lease Liabilities (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Finance
2020	$ 6,241
2021	4,255
2022	3,381
2023	2,489
2024	1,607
Thereafter	891
Total	18,864
Less: Present value discount	1,690
Lease liability	17,174
Operating
2020	12,466
2021	10,347
2022	8,193
2023	6,790
2024	5,224
Thereafter	13,265
Total	56,285
Less: Present value discount	9,402
Lease liability	$ 46,883

Leases - Future Minimum Operating Lease Commitments Under Previous Accounting Guidance (Details) $ in Thousands	Dec. 31, 2018 USD ($)
Leases [Abstract]
2019	$ 10,939
2020	8,764
2021	6,327
2022	4,826
2023	4,239
Thereafter	10,667
Total	$ 45,762

Commitments and Contingencies (Details)	1 Months Ended			12 Months Ended
Commitments and Contingencies (Details)	Dec. 31, 2019 USD ($) Entity welds	Sep. 30, 2019 USD ($)	Apr. 30, 2017	Dec. 31, 2019 USD ($) Entity welds claim	Dec. 31, 2018 USD ($)	Jan. 01, 2020 USD ($)	Sep. 30, 2018 USD ($)
Litigation
Accounts receivable, net	$ 135,997,000			$ 135,997,000	$ 148,324,000
Pension accrual	2,519,000			$ 2,519,000	$ 5,585,000
Period over which potential acquisition-related contingent consideration would be payable				2 years 9 months 18 days
Texas Customer
Litigation
Accounts receivable, net	1,400,000			$ 1,400,000
Verbal demand for damages	1,400,000
Right to Customer Contracts \| Disposal Group, Disposed of by Sale, Not Discontinued Operations \| Subsequent Event
Litigation
Consideration received on sale of disposal						$ 100,000
Products and Systems \| Disposal of Foreign Subsidiaries \| Disposal Group, Disposed of by Sale, Not Discontinued Operations
Litigation
Consideration received on sale of disposal							$ 4,300,000
Term of agreement to purchase products from buyer on sale of subsidiary				3 years	3 years
Amount of purchase agreement with buyer on sale of subsidiary				$ 2,300,000	$ 2,300,000
Remaining amount of purchase agreement with buyer on sale of subsidiary	$ 1,400,000			$ 1,400,000
Various Pipeline Projects For Texas Customer
Litigation
Number of welds alleged not in compliance \| welds	66			66
Number of welds inspected \| welds	16,000			16,000
Verbal demand for damages	$ 7,600,000
Company vehicle accident \| McAllister v. Mistras Group, Inc.
Litigation
Number of claims filed \| claim				1
Pending claims \| Entity	2			2
Pension related contingencies
Litigation
Monthly payments, excluding settlement				$ 3,300,000
Charge for withdrawal liability		$ 900,000		800,000	5,900,000
Acquisition-related contingencies
Litigation
Potential acquisition-related contingent consideration, low end of range	$ 0			0
Potential acquisition-related contingent consideration, high end of range	$ 7,900,000			7,900,000
Selling, General and Administrative Expenses \| NDT Do Brazil, LTDA \| Severance and labor disputes
Litigation
Contingency related charges					$ 1,200,000
GERMANY \| Severance and labor disputes \| French Subsidiary
Litigation
Period covered by temporary staff leasing contract			18 months
GERMANY \| Selling, General and Administrative Expenses \| Severance and labor disputes \| French Subsidiary
Litigation
Contingency related charges				800,000
Contingency payments				200,000
Loss contingency reversals				$ 500,000

Segment Disclosure - Financial Information (Details) $ in Thousands	3 Months Ended												12 Months Ended
	Dec. 31, 2019 USD ($)	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2019 USD ($) Operating_Segment	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Segment Reporting [Abstract]
Number of operating segments \| Operating_Segment													3
Financial information by segment
Revenues	$ 178,991	$ 192,192	$ 200,616	$ 176,787	$ 180,762	$ 182,169	$ 191,793	$ 187,630	$ 187,643	$ 179,570	$ 170,439	$ 163,318	$ 748,586	$ 742,354	$ 700,970
Gross profit	50,583	57,769	60,071	48,874	52,315	52,332	55,083	48,144	50,319	47,897	46,343	43,153	217,297	207,874	187,712
Operating Income (Loss)	2,335	$ 10,779	$ 15,419	$ (4,396)	2,502	$ 3,017	$ 10,304	$ 6,398	$ 6,282	$ (10,375)	$ 5,003	$ 3,250	24,137	22,221	4,160
Depreciation and amortization													38,533	34,413	31,383
Intangible assets, net	109,537				111,395								109,537	111,395
Total assets	719,878				694,037								719,878	694,037
Operating segments \| Services
Financial information by segment
Revenues													595,130	574,619	543,565
Gross profit													165,513	151,974	139,160
Operating Income (Loss)													49,593	47,126	46,677
Depreciation and amortization													28,854	24,079	21,649
Intangible assets, net	98,284				98,362								98,284	98,362
Total assets	537,518				523,506								537,518	523,506
Operating segments \| International
Financial information by segment
Revenues													144,271	153,448	144,265
Gross profit													43,145	45,464	38,974
Operating Income (Loss)													5,856	3,953	3,537
Depreciation and amortization													8,285	8,846	7,768
Intangible assets, net	9,814				11,143								9,814	11,143
Total assets	153,380				146,535								153,380	146,535
Operating segments \| Products and Systems
Financial information by segment
Revenues													18,583	23,426	23,297
Gross profit													8,639	10,560	9,798
Operating Income (Loss)													(529)	2,368	(16,991)
Depreciation and amortization													1,213	1,429	2,180
Intangible assets, net	1,181				1,438								1,181	1,438
Total assets	16,028				12,264								16,028	12,264
Corporate and eliminations
Financial information by segment
Revenues													(9,398)	(9,139)	(10,157)
Gross profit													0	(124)	(220)
Operating Income (Loss)													(30,783)	(31,226)	(29,063)
Depreciation and amortization													181	59	$ (214)
Intangible assets, net	258				452								258	452
Total assets	$ 12,952				$ 11,732								$ 12,952	$ 11,732

Segment Disclosure - Revenue and Long-lived Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018
Revenue and long-lived assets by geographic area
Long-lived assets		$ 490,554	$ 484,549
Revenues	$ 700,970
United States
Revenue and long-lived assets by geographic area
Long-lived assets		233,679	230,140
Revenues	466,683
Other Americas
Revenue and long-lived assets by geographic area
Long-lived assets		181,550	177,628
Revenues	86,870
Europe
Revenue and long-lived assets by geographic area
Long-lived assets		$ 75,325	$ 76,781
Revenues	132,421
Asia-Pacific
Revenue and long-lived assets by geographic area
Revenues	$ 14,996

Repurchase of Common Stock (Details) - Stock Repurchase Plan - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Oct. 07, 2015
Class of Stock [Line Items]
Stock repurchase plan, amount approved			$ 50,000,000
Treasury stock repurchased (in shares)	0	0

Selected Quarterly Financial Information (unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended												12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Revenue	$ 178,991	$ 192,192	$ 200,616	$ 176,787	$ 180,762	$ 182,169	$ 191,793	$ 187,630	$ 187,643	$ 179,570	$ 170,439	$ 163,318	$ 748,586	$ 742,354	$ 700,970
Gross Profit	50,583	57,769	60,071	48,874	52,315	52,332	55,083	48,144	50,319	47,897	46,343	43,153	217,297	207,874	187,712
Income (loss) from operations	2,335	10,779	15,419	(4,396)	2,502	3,017	10,304	6,398	6,282	(10,375)	5,003	3,250	24,137	22,221	4,160
Net income (loss) attributable to Mistras Group, Inc.	$ 829	$ 3,093	$ 7,431	$ (5,293)	$ (1,061)	$ (1,011)	$ 6,000	$ 2,908	$ 884	$ (6,968)	$ 2,217	$ 1,692	$ 6,060	$ 6,836	$ (2,175)
Earnings (loss) per common share:
Basic (in dollars per share)	$ 0.03	$ 0.11	$ 0.26	$ (0.19)	$ (0.04)	$ (0.04)	$ 0.21	$ 0.10	$ 0.03	$ (0.25)	$ 0.08	$ 0.06	$ 0.21	$ 0.24	$ (0.08)
Diluted (in dollars per share)	$ 0.03	$ 0.11	$ 0.26	$ (0.19)	$ (0.04)	$ (0.04)	$ 0.20	$ 0.10	$ 0.03	$ (0.25)	$ 0.07	$ 0.06	$ 0.21	$ 0.23	$ (0.08)

- Definition

The amount of net income (loss) from continuing operations per each share of common stock or unit outstanding during the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(19))
-URI http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(11))
-URI http://asc.fasb.org/extlink&oid=116637232&loc=SL114874131-224263

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(21))
-URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=117326831&loc=d3e1337-109256

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 60B
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=117326831&loc=SL5780133-109256

Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=117326831&loc=d3e1252-109256

Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(20))
-URI http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260

Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(23))
-URI http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260

Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-03(13))
-URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868656-224227

+ Details

- Definition

The amount of net income (loss) derived from continuing operations during the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=117326831&loc=d3e1337-109256

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=117326831&loc=d3e1252-109256

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(23))
-URI http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(11))
-URI http://asc.fasb.org/extlink&oid=116637232&loc=SL114874131-224263

Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-03(13))
-URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868656-224227

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 60B
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=117326831&loc=SL5780133-109256

Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(19))
-URI http://asc.fasb.org/extlink&oid=116637232&loc=SL114874131-224263

Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(21))
-URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227

+ Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details