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Germany GERMANY Goodwill acquired during the period Goodwill, Acquired During Period Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Repayment of revolver Repayments of Lines of Credit Granted (in shares) Shares granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Restricted stock awards vested (in shares) Released (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Current Fiscal Year End Date Current Fiscal Year End Date Dilutive effect of stock options outstanding (in shares) Incremental Common Shares Attributable to Stock Options Outstanding Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of stock options outstanding. Brazil BRAZIL Quarter ended September 30, 2021 and thereafter Debt Covenant Period Five [Member] Debt Covenant Period Five Diluted (in shares) Weighted average common shares outstanding, diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Net settlements of restricted stock units (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Remaining balance under purchase commitment agreement Purchase Commitment, Remaining Minimum Amount Committed Other Other Long Term Debt [Member] Represents details pertaining to other long-term debt of the entity. Property, plant and equipment Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Fair value adjustments to contingent consideration Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Financial Liabilities Outstanding at the beginning of the period (in shares) Outstanding at the end of the period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Cash flows from financing activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Payables and Accruals [Abstract] Payables and Accruals [Abstract] Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Less: Present value discount Finance Lease, Liability, Undiscounted Excess Amount Property, plant and equipment, net Property, plant and equipment, net Property, Plant and Equipment, Net LIBOR London Interbank Offered Rate (LIBOR) [Member] Accumulated other comprehensive income (loss) AOCI Attributable to Parent [Member] Margin percentage Debt Instrument, Basis Spread on Variable Rate Total assets Total assets Assets Net settlement of restricted stock units Share-based Payment Arrangement, Decrease for Tax Withholding Obligation Exercised (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Entity Shell Company Entity Shell Company Total ROU liabilities ROU operating lease liabilities Lease liability Operating Lease, Liability Dilutive effect of restricted stock units outstanding (in shares) Incremental Common Shares Attributable to Restricted Stock Units Outstanding Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of restricted stock units outstanding. Cover [Abstract] Document Type Document Type Requisite service period (years) Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period Subsequent Event Subsequent Event [Member] Litigation Loss Contingencies [Line Items] Impairment Finite-Lived Intangible Assets, Accumulated Impairment Finite-Lived Intangible Assets, Accumulated Impairment Numerator: Net Income (Loss) Attributable to Parent [Abstract] Impairment of intangibles Impairment of Intangible Assets, Finite-lived Variable Rate [Domain] Variable Rate [Domain] Repayment of long-term debt Repayments of Long-term Debt All times through September 30, 2020 Debt Covenant Period Eight [Member] Debt Covenant Period Eight Scenario [Domain] Scenario [Domain] Schedule of Supplemental Balance Sheet Information Assets And Liabilities, Lessee [Table Text Block] Assets And Liabilities, Lessee Fair value of contingent consideration Beginning balance Ending balance Business Combination, Contingent Consideration, Liability Share-based Payment Arrangement [Abstract] Share-based Payment Arrangement [Abstract] Services Services Services [Member] Represents Services, a business segment of the entity. 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Europe Europe [Member] Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Schedule of Consolidated Financial Information by Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Segment Reporting [Abstract] Segment Reporting [Abstract] Less: Present value discount Lessee, Operating Lease, Liability, Undiscounted Excess Amount Noncash investing and financing Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Customer [Domain] Customer [Domain] Total Finance Lease, Liability, Payment, Due Debt Disclosure [Abstract] Debt Disclosure [Abstract] Consideration received on sale of subsidiary Disposal Group, Including Discontinued Operation, Consideration Increase (Decrease) in Stockholders' Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Statistical Measurement [Axis] Statistical Measurement [Axis] Supplemental disclosure of cash paid Supplemental Cash Flow Information [Abstract] Business Combination, Consideration Transferred [Abstract] Business Combination, Consideration Transferred [Abstract] Operating leases Operating Lease, Weighted Average Discount Rate, Percent Corp/Elim Corporate and eliminations Corporate And Eliminations [Member] Corporate And Eliminations Pension accrual Multiemployer Plans, Withdrawal Obligation International International International [Member] Represents International, a business segment of the entity. Common Stock Options Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Various Pipeline Projects For Texas Customer Various Pipeline Projects For Texas Customer [Member] Various Pipeline Projects For Texas Customer Executive and Senior Officers Executive and Senior Officers [Member] Represents information pertaining to the executives and senior officers of the reporting entity. Minimum credit exposure percentage acquisitions Debt Instrument, Debt Covenant, Minimum Credit Exposure Percentage Debt Instrument, Debt Covenant, Minimum Credit Exposure Percentage Net assets acquired Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Operating Lease Arrangement Operating Lease Arrangement [Member] Operating Lease Arrangement Basic earnings (loss) per share: Earnings Per Share, Basic [Abstract] Reporting Unit [Axis] Reporting Unit [Axis] Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Other assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Assets Finance leases Finance Lease, Weighted Average Discount Rate, Percent Variable lease expense Variable Lease, Cost Common stock, shares authorized (in shares) Common Stock, Shares Authorized Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Anniversary 3 Share-based Payment Arrangement, Tranche Three [Member] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Entity Central Index Key Entity Central Index Key Outstanding at beginning of period (in shares) Outstanding at end of period (in shares) Nonvested shares outstanding (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Entity Emerging Growth Company Entity Emerging Growth Company Noncontrolling Interest Noncontrolling Interest [Member] Selling, general and administrative expenses Selling, General and Administrative Expense Number of welds inspected Loss Contingency, Number Of Welds Inspected Loss Contingency, Number Of Welds Inspected Right-of-use liability - operating ROU - current Operating Lease, Liability, Current Share-based compensation expense Share-based Payment Arrangement, Noncash Expense Schedule of Computations of Basic and Diluted Earnings per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Proceeds from revolver Proceeds from Lines of Credit Long-term debt, net of current portion Long-term Debt, Excluding Current Maturities Income Taxes Income Tax, Policy [Policy Text Block] Funded debt leverage ratio at which the entity will bear the maximum interest rate margin (greater than) Debt Instrument, Covenant Funded Leverage Ratio Considered for Maximum Interest Rate Margin Represents the Funded Debt Leverage Ratio at which the entity will have the maximum interest rate margin. Remainder of 2020 Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year Base rate Base Rate [Member] Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract] Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract] Schedule of Maturities of Finance Lease Liabilities Finance Lease, Liability, Maturity [Table Text Block] Company's Headquarters Building [Member] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Disposal Group Name [Domain] Disposal Group Name [Domain] Accrued expenses and other current liabilities Total Accrued Expenses And Other Liabilities, Current Accrued Expenses And Other Liabilities, Current Fair Value Measurements Fair Value Measurement, Policy [Policy Text Block] Quarter ended June 30, 2021 Debt Covenant Period Seven [Member] Debt Covenant Period Seven LIABILITIES AND EQUITY Liabilities and Equity [Abstract] Share-base payments (in shares) Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture Other assets Other Assets, Noncurrent Intangible Assets, Net (Excluding Goodwill) [Abstract] Intangible Assets, Net (Excluding Goodwill) [Abstract] Weighted-average discount rate Weighted Average Discount Rate, Percent [Abstract] Weighted Average Discount Rate, Percent Other comprehensive loss, net of tax Other Comprehensive Income (Loss), Net of Tax Contingency charges Loss Contingency, Loss in Period Total debt Debt outstanding Long-term Debt Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Purchase of property, plant and equipment Payments to Acquire Property, Plant, and Equipment Aerospace & Defense Aerospace and Defense [Member] Aerospace and Defense Proceeds from borrowings of long-term debt Proceeds from Issuance of Long-term Debt Temporary employment contract period Temporary Staff Leasing Contract Period Temporary Staff Leasing Contract Period Reporting Unit [Domain] Reporting Unit [Domain] Schedule of Vesting Activity of Restricted Stock Unit Awards Share-based Compensation Arrangements by Share-based Payment Award, Restricted Stock Units, Vested and Expected to Vest [Table Text Block] Additional interest rate margin if funded debt leverage ratio exceeds threshold percentage Debt Instrument, Additional Interest Rate Due to Funded Debt Leverage Ratio Exceeding Specified Threshold The percentage points added to the reference rate due to the Funded Debt Leverage Ratio, which is used to compute the variable rate on the debt instrument, exceeding a specified threshold. Disposal Group, Disposed of by Sale, Not Discontinued Operations Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] Recovery from unrelated bad debt provision Accounts Receivable, Allowance for Credit Loss, Recovery Bad debt provision for troubled customers, net of recoveries Provision (reversal) of allowance for doubtful accounts receivables Accounts Receivable, Credit Loss Expense (Reversal) Funded debt leverage ratio for acquisitions Debt Instrument, Covenant Temporarily Increase in Funded Debt Leverage Ratio due to Business Acquisitions Debt Instrument, Covenant Temporarily Increase in Funded Debt Leverage Ratio due to Business Acquisitions Total Mistras Group, Inc. Stockholders’ Equity Parent [Member] Weighted-average period over which unrecognized compensation cost is expected to be recognized (years) Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Accounting Policies [Abstract] Payments Business Combination, Contingent Consideration Arrangements, Payments Business Combination, Contingent Consideration Arrangements, Payments Income taxes payable Increase (Decrease) in Income Taxes Payable Additional paid-in capital Additional Paid-in Capital [Member] Revenue Revenue from Contract with Customer [Text Block] Performance period (years) Share Based Compensation Arrangement by Share Based Payment Award, Award Performance Period Represents the performance period of the entity, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Finance leases Finance Lease, Weighted Average Remaining Lease Term Revenue, practical expedient, incremental cost of obtaining a contract, maximum period Revenue, Practical Expedient, Incremental Cost of Obtaining Contract, Maximum Period Revenue, Practical Expedient, Incremental Cost of Obtaining Contract, Maximum Period Debt Covenant Period [Domain] Debt Covenant Period [Domain] [Domain] for Debt Covenant Period [Axis] Title of Individual [Domain] Title of Individual [Domain] Number or welds not in compliance Loss Contingency, Number Of Welds Alleged Not In Compliance Loss Contingency, Number Of Welds Alleged Not In Compliance Disposal Group Name [Axis] Disposal Group Name [Axis] Deferred income taxes Deferred Income Tax Liabilities, Net United States UNITED STATES Interest rate Debt Instrument, Interest Rate, Stated Percentage 2021 Lessee, Operating Lease, Liability, Payments, Due in Rolling Year Two Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Property, plant and equipment, gross Property, Plant and Equipment, Gross Business Combinations [Abstract] Business Combinations [Abstract] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Gross profit Gross profit Gross Profit Geographical [Domain] Geographical [Domain] Property, Plant and Equipment, net Property, Plant and Equipment Disclosure [Text Block] Aggregate consideration paid Cash paid Payments to Acquire Businesses, Gross Entity Address, State or Province Entity Address, State or Province Business Acquisition [Axis] Business Acquisition [Axis] Operating segments Operating Segments [Member] Anniversary 1 Share-based Payment Arrangement, Tranche One [Member] Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Funded debt leverage ratio Debt Instrument, Covenant Funded Debt Leverage Ratio for Additional Interest Payment Represents the Funded Debt Leverage Ratio on which the entity will bear an additional interest on debt. Anniversary 2 Share-based Payment Arrangement, Tranche Two [Member] Total consideration Business Combination, Consideration Transferred Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Number of acquisitions Number of Businesses Acquired Proceeds from sale of equipment Proceeds from Sale of Property, Plant, and Equipment 2022 Finance Lease, Liability, Payments, Due Year Three Business Acquisition [Line Items] Business Acquisition [Line Items] Accounts payable Accounts Payable, Current ROU finance lease assets Finance Lease, Right-of-Use Asset Amount deducted from aggregate cash and cash equivalents held by company and it's subsidiaries if prepayment of credit facility is required Debt Instrument, Covenant, Amount Deducted From Aggregate Cash and Cash Equivalents Held By Company and Subsidiaries If Prepayment of Credit Facility is Required Debt Instrument, Covenant, Amount Deducted From Aggregate Cash and Cash Equivalents Held By Company and Subsidiaries If Prepayment of Credit Facility is Required Entity Interactive Data Current Entity Interactive Data Current Common stock, shares issued (in shares) Common Stock, Shares, Issued Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Impairment charges Asset Impairment Charges Outstanding at the beginning of period (in dollars per share) Outstanding at end of period (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Taxes paid related to net share settlement of share-based awards Payment, Tax Withholding, Share-based Payment Arrangement Inventories Inventory, Net 2024 Lessee, Operating Lease, Liability, Payments, Due in Rolling Year Five Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Earnings (loss) per Share Earnings Per Share [Text Block] Number of awards that may be granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Amortization of ROU assets Finance Lease, Right-of-Use Asset, Amortization Accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Oil & Gas Oil & Gas [Member] Oil & Gas Award Type [Domain] Award Type [Domain] Thereafter Finance Lease, Liability, Payments, Due after Year Five Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Schedule of Acquisition-related Expenses Schedule of Business Combination Acquisition Related Costs [Table Text Block] Tabular disclosure of acquisition-related costs. Lease liability Finance Lease, Liability Senior credit facility Revolving Credit Facility [Member] Granted (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Award vesting rights, percentage Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Number of non-employee directors to whom fully vested common stock is granted Share Based Compensation Arrangement by Share Based Payment Award, Number of Non Employee Directors to whom Award is Granted Represents the number of non-employee directors to whom fully vested common stock is granted. Restricted Stock Unit Awards Restricted Stock Units (RSUs) [Member] Schedule of Long-term Debt Schedule of Long-term Debt Instruments [Table Text Block] Description of Business and Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Effective income tax rate Effective Income Tax Rate Reconciliation, Percent Cash paid for amounts included in the measurement of lease liabilities for finance leases Cash Flow, Lessee [Abstract] Cash Flow, Lessee Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Quarterly payment reduction to non-employee directors Restructuring and Related Cost, Reduction In Quarterly Payment To Non-employee Directors Restructuring and Related Cost, Reduction In Quarterly Payment To Non-employee Directors Acquisition-related expense (benefit), net Acquisition-related expense, net Acquisition Related Costs and Fair Value Adjustments to Initial Purchase Price Allocation This element represents acquisition-related costs incurred in connection with business combinations which costs have been expensed during the period. This also includes adjustments to the fair value of the initial purchase price allocation for acquisitions including, but not limited to, changes in contingent consideration liabilities and other liabilities, accounts receivable, inventory, fixed assets, other assets, and other acquisition-related intangible assets. Acquisition-related costs also include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. Fair value measurements Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Total liabilities Liabilities Goodwill Goodwill Disclosure [Text Block] Acquisitions and Dispositions Business Combination Disclosure [Text Block] Reclassification Reclassification, Policy [Policy Text Block] Common stock, $0.01 par value, 200,000,000 shares authorized, 29,042,069 and 28,945,472 shares issued Common Stock, Value, Issued Research and engineering Research and Development Expense Schedule of Accrued Expenses and Other Current Liabilities Schedule of Accrued Liabilities Deferred Revenue and Contingent Consideration Liabilities Current [Table Text Block] Tabular disclosure of (a) other payables; (b) accrued liabilities; (c) deferred revenue; and (d) the fair value of contingent consideration liabilities, due within one year or within the normal operating cycle if longer. Vesting [Domain] Vesting [Domain] Expired or forfeited (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price Debt covenant, minimum EBITDA, amount Debt Instrument, Covenant, Minimum EBITDA, Amount Debt Instrument, Covenant, Minimum EBITDA, Amount Covenants not to compete Noncompete Agreements [Member] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Inventories Increase (Decrease) in Inventories Reversal of severance obligations Loss Contingency Accrual, Period Increase (Decrease) Denominator: Weighted Average Number of Shares Outstanding, Basic [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Comprehensive loss Comprehensive Income (Loss), Net of Tax, Excluding Portion Of Comprehensive Income Attributable to Noncontrolling Interest Comprehensive Income (Loss), Net of Tax, Excluding Portion Of Comprehensive Income Attributable to Noncontrolling Interest Thereafter Lessee, Operating Lease, Liability, Payments, Due after Rolling Year Five Maximum amount available for the issuance of letters of credit Line of Credit Facility Maximum Borrowing Capacity Available for Issuance of Letters of Credit Represents the maximum amount of borrowing capacity under the revolving credit facility that is available for the issuance of letters of credit. Schedule of Changes in Carrying Amount of Goodwill Schedule of Goodwill [Table Text Block] Basic (in shares) Weighted-average common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Pro forma funded debt leverage ratio Debt Instrument, Covenant, Pro Forma Funded Debt Leverage Ratio due to Business Acquisitions Debt Instrument, Covenant, Pro Forma Funded Debt Leverage Ratio due to Business Acquisitions Number of consecutive business days Debt Covenant, Number Of Consecutive Business Days Debt Covenant, Number Of Consecutive Business Days ROU assets Operating Lease, Right-of-Use Asset Equity Components [Axis] Equity Components [Axis] Due diligence, professional fees and other transaction costs Business Combination, Acquisition Related Costs Total Mistras Group, Inc. stockholders’ equity Stockholders' Equity Attributable to Parent Amortization expense of intangibles Amortization of Intangible Assets Pension withdrawal expense Loss Contingency Accrual, Provision Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Deferred revenue Contract with Customer, Liability, Current Asia-Pacific Asia Pacific [Member] Fair Value Measurements Fair Value Disclosures [Text Block] Number of fiscal quarters to temporary increase funded debt leverage ratio Debt Instrument, Number of Fiscal Quarters To Temporarily Increase Funded Debt Leverage Ratio due to Business Acquisitions Debt Instrument, Number of Fiscal Quarters To Temporarily Increase Funded Debt Leverage Ratio due to Business Acquisitions Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Schedule of Components of Lease Costs and Other Information Related to Leases Lease, Cost [Table Text Block] Foreign currency translation Business Combination, Contingent Consideration Arrangements, Contingent Consideration, Foreign Currency Translation Adjustments Business Combination, Contingent Consideration Arrangements, Contingent Consideration, Foreign Currency Translation Adjustments Accrued salaries, wages and related employee benefits Accrued Salaries Wages and Employee Related Benefits Current Carrying value as of the balance sheet date of the obligations incurred through that date and payable for salaries, wages, and related employee benefit. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle, if longer). Unbilled revenues accrued Contract with Customer, Asset, Net, Current Depreciation and amortization Depreciation, Depletion and Amortization Gross Amount Finite-Lived Intangible Assets, Gross Trade accounts receivable Accounts Receivable, before Allowance for Credit Loss, Current Interest Interest Paid, Excluding Capitalized Interest, Operating Activities Forecast Forecast [Member] Preferred stock, 10,000,000 shares authorized Preferred Stock, Value, Issued Variable Rate [Axis] Variable Rate [Axis] Renewable Energy Industry Customer Renewable Energy Industry Customer [Member] Renewable Energy Industry Customer Schedule of Estimated Fair Values of Assets Acquired and Liabilities Assumed Schedule of Business Acquisitions, by Acquisition [Table Text Block] Potential common stock excluded from computation of diluted earnings per share due to net loss for the period (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Disposal Group Classification [Domain] Disposal Group Classification [Domain] Related Party Transaction [Axis] Related Party Transaction [Axis] Depreciation and amortization expense Depreciation Deferred income taxes Deferred Income Tax Noncash Expense (Benefit) The noncash component of income tax expense for the period representing the increase (decrease) in the entity's deferred tax assets and liabilities pertaining to continuing operations. Litigation Case [Axis] Litigation Case [Axis] Preceding period used for calculating interest coverage ratio Debt Instrument, Preceding Period Used for Calculation of Interest Coverage Ratio Represents the preceding period used for determination of the Interest Coverage Ratio. Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Credit Agreement Credit Agreement [Member] Credit Agreement Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Restricted Stock Units Awards (Units) Performance Restricted Stock (Units) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Equity Component [Domain] Equity Component [Domain] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Document Transition Report Document Transition Report Cash and cash equivalents if prepayment of facility is required Debt Instrument, Covenant, Prepayment of Outstanding Credit Facility Required if Cash and Cash Equivalents Exceeds, Amount Debt Instrument, Covenant, Prepayment of Outstanding Credit Facility Required if Cash and Cash Equivalents Exceeds, Amount Stock Options Share-based Payment Arrangement, Option [Member] Debt issuance costs Debt Issuance Costs, Net Potential acquisition-related contingent consideration, low end of range Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, Low Cash flows from investing activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Repayment of finance lease obligations Finance Lease, Principal Payments Goodwill impairment charge Impairment charges Goodwill, Impairment Loss Cumulative goodwill impairment Goodwill, Impaired, Accumulated Impairment Loss Acquisition that Provides Pipeline Integrity Management Software Acquiree That Provides Pipeline Integrity Management Software [Member] Acquiree That Provides Pipeline Integrity Management Software Income Statement [Abstract] Income Statement [Abstract] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Restructuring Plan [Domain] Restructuring Plan [Domain] Maximum borrowing capacity in non-U.S. Dollar currencies Line of Credit Facility Maximum Borrowing Capacity in Non US Currencies Represents the maximum borrowing capacity in non-U.S. dollar currencies under the revolving credit facility.