Increase (Decrease) in Stockholders' Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Net Loss Net Loss Net loss Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Office furniture and equipment Office Furniture and Equipment [Member] Furniture and equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities. Bad debt provision for troubled customers, net of recoveries Accounts Receivable, Credit Loss Expense (Reversal) Deferred income taxes Deferred Income Tax Assets, Net 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] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Industrials Industrials [Member] Industrials Payment of contingent consideration for business acquisitions Payments of Contingent Consideration for Business Acquisitions The cash outflow associated with the consideration paid on the achievement of specific performance metrics in connection with acquisition of business during the period. Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Abstract] Debt Instrument [Axis] Debt Instrument [Axis] Schedule of Company's Outstanding, Nonvested Restricted Share Units and Performance Restricted Stock Units Share-Based Payment Arrangement, Outstanding Award, Activity, Excluding Option [Table Text Block] Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Contingency charges Loss Contingency, Loss in Period Additional paid-in capital Additional Paid in Capital Cash flows from investing activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Debt Covenant Period Five Debt Covenant Period Five [Member] Debt Covenant Period Five Margin rate (as a percent) Debt Instrument, Basis Spread on Variable Rate Statistical Measurement [Domain] Statistical Measurement [Domain] Depreciation and amortization expense Depreciation Other Other Long Term Debt [Member] Represents details pertaining to other long-term debt of the entity. Net settlements of restricted stock units (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Interest rate Debt Instrument, Interest Rate, Stated Percentage Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Damages no longer sought Loss Contingency, Damages No Longer Sought, Value Loss Contingency, Damages No Longer Sought, Value Other Other Noncash Income (Expense) Property, plant and equipment, net Property, plant and equipment, net Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization 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. Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Net Loss attributable to Mistras Group, Inc. Net loss attributable to Mistras Group, Inc. Net Income (Loss) Attributable to Parent Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Potentially dilutive shares excluded from computation of diluted EPS due to net loss for the period (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Other Other Intangible Assets [Member] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Trade accounts receivable Accounts Receivable, before Allowance for Credit Loss, Current Equity Component [Domain] Equity Component [Domain] Number of consolidated cases Loss Contingency, Consolidated Claims Filed, Number Loss Contingency, Consolidated Claims Filed, Number Subsequent Event Type [Domain] Subsequent Event Type [Domain] Secured Debt Secured Debt [Member] Related Party [Domain] Related Party [Domain] Fair Value Measurements Fair Value Measurement, Policy [Policy Text Block] Plan Name [Axis] Plan Name [Axis] Senior Secured Term Loan Senior Secured Term Loan A Facility Term A Loan Facility [Member] Term A Loan Facility Other Other Products and Services [Member] Other Products and Services Supplemental disclosure of cash paid (received) Supplemental Cash Flow Information [Abstract] Executive Officers Executive Officer [Member] Number of operating segments Number of Operating Segments Unrecognized compensation cost, net of estimated forfeitures Unrecognized compensation cost Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount Plan Name [Domain] Plan Name [Domain] Goodwill [Line Items] Goodwill [Line Items] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Outstanding borrowings Long-Term Line of Credit Entity Address, State or Province Entity Address, State or Province Other comprehensive loss: Other Comprehensive Income (Loss), Net of Tax [Abstract] Award Type [Axis] Award Type [Axis] Denominator: Weighted Average Number of Shares Outstanding, Basic [Abstract] Net cash provided by (used in) operating activities Net Cash Provided by (Used in) Operating Activities Right-of-use liability - Operating Operating Lease, Liability, Current Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Reversal of severance obligations Loss Contingency Accrual, Period Increase (Decrease) Payments Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Receivables [Abstract] Receivables [Abstract] Debt Covenant Period [Axis] Debt Covenant Period [Axis] Debt Covenant Period [Axis] Liability Class [Axis] Liability Class [Axis] Long-term debt, net of current portion Long-Term Debt, Excluding Current Maturities Accounts Receivable, net Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Total liabilities Liabilities Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Geographical [Axis] Geographical [Axis] Variable Rate Component Variable Rate Component [Member] Variable Rate Component Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Senior credit facility Revolving Credit Facility Revolving Credit Facility [Member] Number of equity incentive plans Employee Stock Ownership Plan Number of Plans Employee Stock Ownership Plan Number of Plans Schedule of Property, Plant and Equipment, Net Property, Plant and Equipment [Table Text Block] Document Type Document Type Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] Useful Life (Years) Property, Plant and Equipment, Useful Life Long-Term Debt Long-Term Debt [Text Block] 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] Class Action Class Action [Member] Class Action Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] 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 Products & Systems Products and Systems Products and Systems [Member] Products and Systems Segments [Axis] Segments [Axis] Product and Service [Domain] Product and Service [Domain] Cash flows from operating activities Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Entity Shell Company Entity Shell Company Variable Rate Component [Axis] Variable Rate Component [Axis] Variable Rate Component Foreign Subsidiary Affiliated Entity [Member] Subsequent Event Subsequent Event [Member] Consolidation Items [Domain] Consolidation Items [Domain] Document Period End Date Document Period End Date Fixed charge coverage ratio Debt Instrument, Covenant, Fixed Charge Coverage Ratio Debt Instrument, Covenant, Fixed Charge Coverage Ratio Severance and Labor Disputes Severance and Labor Disputes [Member] Severance and Labor Disputes Power generation & Transmission Power Generation and Transmission [Member] Power Generation and Transmission Total assets Total assets Assets Debt Disclosure [Abstract] Debt Disclosure [Abstract] Loss per common share Earnings Per Share [Abstract] Antidilutive Securities [Axis] Antidilutive Securities [Axis] PRSUs Performance Shares [Member] Infrastructure, Research & Engineering Infrastructure, Research and Engineering [Member] Infrastructure, Research and Engineering Beginning balance (in shares) Ending balance (in shares) Shares, Issued Right to Customer Contracts Right to Customer Contracts [Member] Right to Customer Contracts Current portion of long-term debt Less: Current portion Long-Term Debt, Current Maturities Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Accounting Policies [Abstract] Line of Credit Line of Credit [Member] Loss before benefit for income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Segments [Domain] Segments [Domain] Schedule of Goodwill [Table] Schedule of Goodwill [Table] Earnings (loss) per Share Earnings Per Share [Text Block] Customer [Axis] Customer [Axis] Obligations under finance leases, net of current portion Finance Lease, Liability, Noncurrent Disposal Group, Disposed of by Sale, Not Discontinued Operations Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] Comprehensive Loss Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Award Type [Domain] Award Type [Domain] 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 Schedule of Net Carrying Amount of Intangible Assets Schedule of Finite-Lived Intangible Assets [Table Text Block] Gross profit Gross profit Gross Profit Cash flows from financing activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Entity Registrant Name Entity Registrant Name Subsequent Events Subsequent Events [Text Block] Dividend yield Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate Foreign currency translation Goodwill, Foreign Currency Translation Gain (Loss) Customer relationships Customer Relationships [Member] Entity Address, City or Town Entity Address, City or Town Net settlement of restricted stock units Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Total equity Beginning balance Ending balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Principles of Consolidation Consolidation, Policy [Policy Text Block] End of each quarter subsequent to March 31, 2022 Debt Covenant Period Two [Member] Debt Covenant Period Two Germany GERMANY Minimum Minimum [Member] Non-controlling interests Stockholders' Equity Attributable to Noncontrolling Interest Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Entity Emerging Growth Company Entity Emerging Growth Company Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Unamortized debt issuance costs Debt Issuance Costs, Net Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Quarter ending March 31, 2022 Debt Covenant Period One [Member] Debt Covenant Period One 2016 Plan Long-Term Incentive Plan 2016 [Member] Long-Term Incentive Plan 2016 Fair Value Measurements Fair Value Disclosures [Text Block] Trading Symbol Trading Symbol Entity File Number Entity File Number Intangible Assets Intangible Assets Disclosure [Text Block] Research and engineering Research and Development Expense Contingent Consideration Contingent Consideration [Member] Contingent Consideration Fair Value by Liability Class [Domain] Fair Value by Liability Class [Domain] Disposal Group Classification [Axis] Disposal Group Classification [Axis] Title of Individual [Axis] Title of Individual [Axis] Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Restricted Stock Unit Awards Restricted Stock Units (RSUs) [Member] Effective income tax rate Effective Income Tax Rate Reconciliation, Percent Proceeds from revolver Proceeds from Lines of Credit Acquisitions Business Combination Disclosure [Text Block] Maximum margin, if greater than Debt Instrument, Covenant, Consolidated Debt Leverage Ratio, Maximum Margin Applicable, If Greater Than Debt Instrument, Covenant, Consolidated Debt Leverage Ratio, Maximum Margin Applicable, If Greater Than Description of Business and Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Beginning balance Ending balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value Subsequent Events [Abstract] Subsequent Events [Abstract] Increase in total number of shares authorized for issuance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized Total consolidated debt leverage ratio Debt Instrument, Covenant Compliance, Total Consolidated Debt Leverage Ratio Debt Instrument, Covenant Compliance, Total Consolidated Debt Leverage Ratio Debt periodic payments Debt Instrument, Periodic Payment Credit Facility [Domain] Credit Facility [Domain] Amortization expense of intangibles Amortization of Intangible Assets Schedule of Changes in Carrying Amount of Goodwill Schedule of Goodwill [Table Text Block] Interest, net Interest Paid, Excluding Capitalized Interest, Operating Activities Basic (in dollars per share) Basic loss per share (in dollars per share) Earnings Per Share, Basic Requisite service period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Requisite Service Period Fair value of awards vested Grant date fair value of awards issued Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Amount of damages claimed Loss Contingency, Damages Sought, Value Total Mistras Group, Inc. stockholders’ equity Stockholders' Equity Attributable to Parent Non-employee Directors Director [Member] Other Americas Other Americas [Member] Represents the information pertaining to North and South America excluding the United States. Forfeited (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Entity Interactive Data Current Entity Interactive Data Current Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Changes in operating assets and liabilities, net of effect of acquisitions and dispositions Increase (Decrease) in Operating Capital [Abstract] Numerator: Net Income (Loss) Attributable to Parent [Abstract] Class Action on Behalf of Employees Class Action on Behalf Of Current And Former Employees [Member] Class Action on Behalf Of Current And Former Employees Accumulated deficit Retained Earnings [Member] Financial information by segment Segment Reporting Information [Line Items] Common Stock Common Stock [Member] Number of performance award metrics Share-Based Compensation Arrangement By Share-Based Payment Award, Number Of Award Metrics Share-Based Compensation Arrangement By Share-Based Payment Award, Number Of Award Metrics Variable Rate Component [Domain] Variable Rate Component [Domain] Variable Rate Component [Domain] Number of awards that may be granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant Revenue Revenue [Policy Text Block] Income Taxes Income Tax, Policy [Policy Text Block] Statement [Table] Statement [Table] Released (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Accounts receivable, net Accounts receivable, net Past due receivables outstanding Receivables, Net, Current Document Quarterly Report Document Quarterly Report Letter of Credit Letter of Credit [Member] Current Assets Assets, Current [Abstract] Statistical Measurement [Axis] Statistical Measurement [Axis] Accumulated deficit Retained Earnings (Accumulated Deficit) Disposal Group Name [Axis] Disposal Group Name [Axis] Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Equity Components [Axis] Equity Components [Axis] Litigation Case [Domain] Litigation Case [Domain] Segment Reporting Segment Reporting, Policy [Policy Text Block] Document Fiscal Year Focus Document Fiscal Year Focus Cost of revenue Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization Statement Statement [Line Items] Repayment of finance lease obligations Finance Lease, Principal Payments Consideration received on sale of subsidiary Disposal Group, Including Discontinued Operation, Consideration Contingent consideration, current portion Business Combination, Contingent Consideration, Liability, Current Work in progress and finished goods Inventory, Finished Goods and Work in Process, Net of Reserves 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 Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Variable Rate [Domain] Variable Rate [Domain] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Gross Amount Finite-Lived Intangible Assets, Gross Selling, general and administrative expenses Selling, General and Administrative Expense Debt Covenant Period Three Debt Covenant Period Three [Member] Debt Covenant Period Three Loss Contingencies [Table] Loss Contingencies [Table] Adjustments to fair value of contingent consideration liabilities Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability Goodwill Goodwill Disclosure [Text Block] Accumulated other comprehensive loss AOCI Attributable to Parent [Member] Document Transition Report Document Transition Report Local Phone Number Local Phone Number Loss from operations Income (loss) from operations Operating Income (Loss) Inventories Increase (Decrease) in Inventories Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding 2009 Plan Long Term Incentive Plan 2009 [Member] Represents information pertaining to 2009 Long-Term Incentive Plan, which becomes effective upon the closing of the IPO. Goodwill Balance at December 31, 2022 Balance at March 31, 2023 Goodwill Property, Plant and Equipment, Type [Axis] Long-Lived Tangible Asset [Axis] Adjustments to reconcile net loss to net cash provided by (used in) operating activities Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Benefit for income taxes Income Tax Expense (Benefit) Geographical [Domain] Geographical [Domain] Deferred income taxes Deferred Income Tax Liabilities, Net Income Statement [Abstract] Income Statement [Abstract] Additional paid-in capital Additional Paid-in Capital [Member] Document Fiscal Period Focus Document Fiscal Period Focus Basic loss per share Earnings Per Share, Basic [Abstract] Texas Customer Texas Customer [Member] Texas Customer Diluted (in shares) Weighted-average common shares outstanding, diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Debt Covenant Period Four Debt Covenant Period Four [Member] Debt Covenant Period Four Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Accrued workers’ compensation and health benefits Accrued Workers Compensation and Health Benefits Current Carrying value as of the balance sheet date of obligations and payables pertaining to workers compensation and health benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle, if longer). Schedule of Inventory, Current Schedule of Inventory, Current [Table Text Block] Litigation Loss Contingencies [Line Items] Buildings and improvements Building and Building Improvements [Member] Common stock, $0.01 par value, 200,000,000 shares authorized, 30,230,446 and 29,895,487 shares issued and outstanding Common Stock, Value, Issued Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Other Process Industries Other Process Industries [Member] Other Process Industries Granted (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Accrued expenses and other liabilities Increase (Decrease) in Other Accrued Liabilities and Deferred Liabilities The increase (decrease) during the reporting period in other expenses incurred but not yet paid and the change during the period in carrying value for all deferred liabilities due within one year or operating cycle. Asia-Pacific Asia Pacific [Member] Operating segments Operating Segments [Member] Purchase of intangible assets Payments to Acquire Intangible Assets and Software The cash outflow to acquire assets without physical form usually arising from contractual or other legal rights, excluding goodwill. In addition, the cash outflow associated with the development, modification or acquisition of software programs or applications for internal use (that is, not to be sold, leased or otherwise marketed to others) that qualify for capitalization. Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Accrued Expenses and Other Current Liabilities Accrued Liabilities Deferred Revenues and Contingent Consideration Liabilities Current Disclosure [Text Block] The entire disclosure for accrued liabilities, deferred revenues, and the fair value of contingent consideration liabilities at the end of the reporting period. Less: net income attributable to noncontrolling interests, net of taxes Net Income (Loss) Attributable to Noncontrolling Interest Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Current Liabilities Liabilities, Current [Abstract] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Common stock, shares issued (in shares) Common Stock, Shares, Issued Deferred revenue Contract with Customer, Liability, Current Total Mistras Group, Inc. Stockholders’ Equity Parent [Member] Due diligence, professional fees and other transaction costs Business Combination, Acquisition Related Costs Current portion of finance lease obligations Finance Lease, Liability, Current Fair value measurements Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] The Credit Agreement, JP Morgan Chase Bank The Credit Agreement, JP Morgan Chase Bank [Member] The Credit Agreement, JP Morgan Chase Bank Amendment Flag Amendment Flag Useful Life (Years) Finite-Lived Intangible Asset, Useful Life Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Face amount of loan Debt Instrument, Face Amount Number of proceedings Loss Contingency, New Claims Filed, Number Other comprehensive income (loss), net of tax Other Comprehensive Income (Loss), Net of Tax Comprehensive loss attributable to Mistras Group, Inc. Comprehensive Income (Loss), Net of Tax, Attributable to Parent Schedule of Changes in Fair Value of Level 3 Contingent Consideration Fair Value, Liabilities Measured on Recurring Basis [Table Text Block] Litigation Case [Axis] Litigation Case [Axis] Schedule of Selected Consolidated Financial Information by Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Corp/Elim Corporate and eliminations Corporate And Eliminations [Member] Corporate And Eliminations Entity Current Reporting Status Entity Current Reporting Status Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Other assets Other Assets, Noncurrent International International International [Member] Represents International, a business segment of the entity. Pension accrual Pension plan withdrawal, potential liability Multiemployer Plans, Withdrawal Obligation 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. Depreciation and amortization Depreciation, Depletion and Amortization Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Effect of exchange rate changes on cash and cash equivalents Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Continuing Operations Equipment acquired through finance lease obligations Lease Obligation Incurred Repayment of long-term debt Repayments of Long-Term Debt Number of welds inspected (over) Loss Contingency, Number Of Welds Inspected Loss Contingency, Number Of Welds Inspected Revaluation Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Increase (Decrease) Due To Changes In Amount Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Increase (Decrease) Due To Changes In Amount Stock Options Share-Based Payment Arrangement, Option [Member] Title of Individual [Domain] Title of Individual [Domain] Allowance for credit losses Allowance for credit losses Accounts Receivable, Allowance for Credit Loss, Current Total debt Debt outstanding Long-Term Debt Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Common stock, shares authorized (in shares) Common Stock, Shares Authorized Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Income taxes payable Accrued Income Taxes, Current Maximum Maximum [Member] Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Accounts payable Increase (Decrease) in Accounts Payable, Trade Accrued expenses and other current liabilities Total Accrued Expenses And Other Liabilities, Current Accrued Expenses And Other Liabilities, Current Schedule of Fully-vested Common Stock Issued to Non-employee Directors Schedule of Deferred Compensation Arrangement with Individual, Share-Based Payments [Table Text Block] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Total current assets Assets, Current Intangible Assets, Net (Excluding Goodwill) [Abstract] Intangible Assets, Net (Excluding Goodwill) [Abstract] Income taxes, net of refunds Income Taxes Paid, Net Weighted Average Grant-Date Fair Value (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Revenue recognized that was included in contract liability balance at the beginning of the year Contract with Customer, Liability, Revenue Recognized Entity Small Business Entity Small Business Awards issued (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period Revenue, remaining performance obligation, expected timing of satisfaction period Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Foreign currency loss Foreign Currency Transaction Gain (Loss), Realized Software/Technology Computer Software, Intangible Asset [Member] Property, Plant and Equipment, net Property, Plant and Equipment Disclosure [Text Block] Property, Plant and Equipment, Type [Domain] Long-Lived Tangible Asset [Domain] Accounts receivable Increase (Decrease) in Accounts Receivable Title of 12(b) Security Title of 12(b) Security Aerospace & Defense Aerospace and Defense [Member] Aerospace and Defense Performance condition adjustments (in shares) Share Based Compensation Arrangement By Share Based PaymentAward, Equity Instruments Other Than Options, Performance Condition Adjustments, Net Share Based Compensation Arrangement By Share Based PaymentAward, Equity Instruments Other Than Options, Performance Condition Adjustments, Net Payables and Accruals [Abstract] Payables and Accruals [Abstract] Subsequent Event [Line Items] Subsequent Event [Line Items] Repayment of revolver Repayments of Lines of Credit Debt Instrument [Line Items] Debt Instrument [Line Items] Reporting Unit [Axis] Reporting Unit [Axis] Business Combination and Asset Acquisition [Abstract] Financing costs incurred Payments of Debt Issuance Costs Segment Disclosure Segment Reporting Disclosure [Text Block] Performance condition adjustments (in dollars per share) Share-based Compensation Arrangement By Share-based Payment Award, Equity Instruments Other Than Options, Performance Condition Adjustments, Net, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement By Share-based Payment Award, Equity Instruments Other Than Options, Performance Condition Adjustments, Net, Weighted Average Grant Date Fair Value 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. LIABILITIES AND EQUITY Liabilities and Equity [Abstract] Debt Covenant Period [Domain] Debt Covenant Period [Domain] [Domain] for Debt Covenant Period [Axis] Number or welds not in compliance Loss Contingency, Number Of Welds Alleged Not In Compliance Loss Contingency, Number Of Welds Alleged Not In Compliance Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Settlement liability Litigation Settlement, Amount Awarded to Other Party Weighted-average common shares outstanding: Denominator: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Inventories Inventories Inventory, Net Pension Related Contingencies Withdrawal from Multiemployer Defined Benefit Plan [Member] Accounts payable Accounts Payable, Current Accumulated depreciation and amortization Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, Accumulated Depreciation and Amortization Fair value adjustments to contingent consideration Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Financial Liabilities Capitalized unamortized debt issuance costs Write off of Deferred Debt Issuance Cost Entity Filer Category Entity Filer Category Basic (in shares) Weighted-average common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] United States UNITED STATES Estimated severance obligations Loss Contingency Accrual Liabilities: Liabilities, Fair Value Disclosure [Abstract] Recognized share-based compensation expense (benefit) Share-Based Payment Arrangement, Expense Commitments and contingencies (Note 14) Commitments and Contingencies Security Exchange Name Security Exchange Name Preferred stock, 10,000,000 shares authorized Preferred Stock, Value, Issued Outstanding letters of credit Letters of Credit Outstanding, Amount Restricted Stock Restricted Stock [Member] Property, Plant and Equipment, net Property, Plant and Equipment [Line Items] Revenue Revenue Revenue from Contract with Customer, Excluding Assessed Tax Income taxes payable Increase (Decrease) in Income Taxes Payable Payment of contingent consideration liability in excess of acquisition-date fair value Payment for Contingent Consideration Liability, Operating Activities Cover [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Level 3 Fair Value, Inputs, Level 3 [Member] Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Share-Based Compensation Share-Based Payment Arrangement [Text Block] Lowest available margin applicable Debt Instrument, Covenant, Consolidated Debt Leverage Ratio, Lowest Available Margin Applicable Debt Instrument, Covenant, Consolidated Debt Leverage Ratio, Lowest Available Margin Applicable Revenue Revenue from Contract with Customer [Text Block] Segment Reporting [Abstract] Segment Reporting [Abstract] North America North America Segment [Member] Represents North America, a business segment of the entity. Noncontrolling Interest Noncontrolling Interest [Member] Reorganization and other costs Restructuring and Related Cost, Incurred Cost Taxes paid related to net share settlement of share-based awards Payment, Tax Withholding, Share-Based Payment Arrangement Total liabilities and equity Liabilities and Equity Debt term (in years) Debt Instrument, Term Raw materials and consumable supplies Inventory, Raw Materials and Supplies, Net of Reserves Third party debt issuance costs expensed Amortization of Debt Issuance Costs Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Goodwill [Roll Forward] Goodwill [Roll Forward] Related Party [Axis] Related Party [Axis] Land Land [Member] Diluted loss per share: Earnings Per Share, Diluted [Abstract] Oil & Gas Oil & Gas [Member] Oil & Gas Disposal Group Name [Domain] Disposal Group Name [Domain] Schedule of Acquisition-related Expenses Schedule of Business Combination Acquisition Related Costs [Table Text Block] Tabular disclosure of acquisition-related costs. Current Fiscal Year End Date Current Fiscal Year End Date Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Diluted (in dollars per share) Diluted loss per share (in dollars per share) Earnings Per Share, Diluted Intangible assets, net Net Carrying Amount Intangible Assets, Net (Excluding Goodwill) 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. Proceeds from sale of equipment Proceeds from Sale of Property, Plant, and Equipment Average share price trading period Share-based Compensation Arrangement by Share-based Payment Award, Average Share Price Trading Period Share-based Compensation Arrangement by Share-based Payment Award, Average Share Price Trading Period Vesting period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Share-based payments APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Class Action on Behalf of State of California Class Action on Behalf Of State Of California [Member] Class Action on Behalf Of State Of California Consolidation Items [Axis] Consolidation Items [Axis] Total current liabilities Liabilities, Current Reporting Unit [Domain] Reporting Unit [Domain] Acquisition-related expense, 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. Schedule of Accounts Receivable, Net Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Petrochemical Petrochemical [Member] Petrochemical 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. Entity Address, Address Line One Entity Address, Address Line One Minimum amount for threshold of business acquisition Debt Instrument, Covenant, Threshold Business Acquisition, Minimum Amount Debt Instrument, Covenant, Threshold Business Acquisition, Minimum Amount Number of business days written notice is required Debt Instrument, Covenant, Number Of Days Before Business Acquisition, Written Notice Required Debt Instrument, Covenant, Number Of Days Before Business Acquisition, Written Notice Required Product and Service [Axis] Product and Service [Axis] Europe Europe [Member] 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. Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Interest expense Interest Expense Credit Facility [Axis] Credit Facility [Axis] Inventories Inventory Disclosure [Text Block] Schedule of Long-term Debt Schedule of Long-Term Debt Instruments [Table Text Block] Machinery and equipment Machinery and Equipment [Member] Subsequent Event [Table] Subsequent Event [Table] 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 Inventory Disclosure [Abstract] Entity Tax Identification Number Entity Tax Identification Number Capitalized costs associated with debt modifications Unamortized Debt Issuance Expense Total number of shares authorized for issuance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized Reclassification Reclassification, Comparability Adjustment [Policy Text Block] Schedule of Disaggregated Revenues Disaggregation of Revenue [Table Text Block] Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Unbilled revenues accrued Contract with Customer, Asset, after Allowance for Credit Loss, Current Covenants not to compete Noncompete Agreements [Member] Property, plant and equipment, gross Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, before Accumulated Depreciation and Amortization Fair Value Liabilities Measured On Recurring Basis, Unobservable Input Reconciliation Calculation [Roll Forward] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] 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). Legal settlement and insurance recoveries, net Litigation Settlement, Expense Net change in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Litigation and Commercial Claims Collectibility of Receivables [Member] Entity Central Index Key Entity Central Index Key Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Other accrued expenses Other Accrued Liabilities, Current Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] 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. City Area Code City Area Code ASSETS Assets [Abstract] Credit Agreement Credit Agreement [Member] Credit Agreement Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Depreciation Cost, Depreciation Noncash investing and financing Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Share-based compensation expense Share-Based Payment Arrangement, Noncash Expense Last days trading period Share-based Compensation Arrangement by Share-based Payment Award, Last Day Trading Period Share-based Compensation Arrangement by Share-based Payment Award, Last Day Trading Period Variable Rate [Axis] Variable Rate [Axis] Other long-term liabilities Other Liabilities, Noncurrent Payments of severance obligations Loss Contingency Accrual, Payments Disposal Group Classification [Domain] Disposal Group Classification [Domain] Purchase of property, plant and equipment Payments to Acquire Property, Plant, and Equipment Number of units increased (decreased) during the period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Other Share Increase (Decrease) Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Schedule of Computations of Basic and Diluted Earnings (Loss) per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] 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. Customer [Domain] Customer [Domain]