Business Acquisition [Axis] Business Acquisition [Axis] Increase (Decrease) in Stockholders' Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Percentage of settlement installments Litigation Settlement, Amount Awarded from Other Party, Installment Percentage Litigation Settlement, Amount Awarded from Other Party, Installment Percentage Total Lessee, Operating Lease, Liability, to be Paid Net Income (Loss) Net income 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 ROU finance lease assets Finance Lease, Right-of-Use Asset, after Accumulated Amortization 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] Lease liability Finance Lease, Liability 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 Legal settlement and insurance recoveries, net Contingency charges Loss Contingency, Loss in Period 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. Additional paid-in capital Additional Paid in Capital Cash flows from investing activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Less: net income attributable to noncontrolling interests, net of taxes Net Income (Loss) And Foreign Currency Translation Adjustments Attributable To Noncontrolling Interest Net Income (Loss) And Foreign Currency Translation Adjustments Attributable To Noncontrolling Interest Floor rate SOFR margin Debt Instrument, Basis Spread on Variable Rate 2026 Finance Lease, Liability, to be Paid, Year Four Statistical Measurement [Domain] Statistical Measurement [Domain] Depreciation expense Depreciation Other Other Long Term Debt [Member] Represents details pertaining to other long-term debt of the entity. Exercised (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Net settlements of restricted stock units (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Operating leases Operating Lease, Weighted Average Discount Rate, Percent Interest rate Debt Instrument, Interest Rate, Stated Percentage Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] 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. 2025 Finance Lease, Liability, to be Paid, Year Three Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Net Income (Loss) attributable to Mistras Group, Inc. Net income (loss) attributable to Mistras Group, Inc. Net Income (Loss) Attributable to Parent Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Leases Lessee, Finance Leases [Text Block] Potentially dilutive shares excluded from computation of diluted EPS due to net income (loss) for the period (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Other Other Intangible Assets [Member] Remainder of 2022 Finance Lease, Liability, to be Paid, Remainder of Fiscal Year Subsequent Event Type [Axis] Subsequent Event Type [Axis] Operating Lessee, Operating Lease, Liability, to be Paid [Abstract] Trade accounts receivable Accounts Receivable, before Allowance for Credit Loss, Current Schedule of Supplemental Balance Sheet Information Assets And Liabilities, Lessee [Table Text Block] Assets And Liabilities, Lessee Equity Component [Domain] Equity Component [Domain] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Secured Debt Secured Debt [Member] Services Services [Member] Represents Services, a business segment of the entity. Total consolidated leverage ratio, if the company incurs certain subordinated debt and other indebtedness Debt Instrument, Covenant Compliance, Consolidated Debt Leverage Ratio, After Additional Subordinated Debt And Other Indebtedness Debt Instrument, Covenant Compliance, Consolidated Debt Leverage Ratio, After Additional Subordinated Debt And Other Indebtedness Valuation allowance recorded during the period related to deferred tax assets Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount Leases Lessee, Operating Leases [Text Block] Award vesting percentage (ratably on each of the first four anniversary date) Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage Amortization of ROU assets Finance Lease, Right-of-Use Asset, Amortization ROU assets obtained in the exchange for lease liabilities Right-Of-Use Asset Obtained In Exchange For Lease Liability [Abstract] Right-Of-Use Asset Obtained In Exchange For Lease Liability Related Party [Domain] Related Party [Domain] Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] 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 Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Supplemental disclosure of cash paid Supplemental Cash Flow Information [Abstract] Diluted (in dollars per share) Diluted income (loss) per share (in dollars per share) Income (Loss) from Continuing Operations, Per Diluted Share 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] Remainder of 2022 Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year Performance condition adjustments (in shares) Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Increase (Decrease) Adjustments In Period Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Increase (Decrease) Adjustments In Period 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 income (loss): Other Comprehensive Income (Loss), Net of Tax [Abstract] Number of settlement installments Litigation Settlement, Amount Awarded from Other Party, Number Of Installments Litigation Settlement, Amount Awarded from Other Party, Number Of Installments Award Type [Axis] Award Type [Axis] Thereafter Finance Lease, Liability, To Be Paid, After Year Four Finance Lease, Liability, To Be Paid, After Year Four Denominator: Weighted Average Number of Shares Outstanding, Basic [Abstract] Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Right-of-use liability - Operating ROU - current Operating Lease, Liability, Current Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Finance lease expense Lease, Cost [Abstract] Payments Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements Related Party Transaction [Domain] Related Party Transaction [Domain] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Weighted-average remaining lease term (in years) Weighted Average Remaining Lease Term [Abstract] Weighted Average Remaining Lease Term 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 Operating leases Operating Lease, Weighted Average Remaining Lease Term 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] Schedule of Property, Plant and Equipment, net Property, Plant and Equipment [Table Text Block] Revenue Revenue from Contract with Customer [Policy Text Block] Document Type Document Type Weighted Average Exercise Price Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] Thereafter Lessee, Operating Lease, Liability, To Be Paid, After Year Four Lessee, Operating Lease, Liability, To Be Paid, After Year Four Long-Term Debt Long-Term Debt [Text Block] Useful Life (Years) Property, Plant and Equipment, Useful Life 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 Expired or forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures and Expirations in Period Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Potential acquisition-related contingent consideration, low end of range Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, Low 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 Products and Systems Products and Systems [Member] Products and Systems Segments [Axis] Segments [Axis] Finance Finance Lease, Liability, to be Paid [Abstract] 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 2023 Lessee, Operating Lease, Liability, to be Paid, Year One Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] 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] Revenue, practical expedient, incremental cost of obtaining a contract, maximum period (less than) Revenue, Practical Expedient, Incremental Cost Of Obtaining Contract, Maximum Period Revenue, Practical Expedient, Incremental Cost Of Obtaining Contract, Maximum Period Document Period End Date Document Period End Date Anniversary 1 Share-Based Payment Arrangement, Tranche One [Member] 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] Earnings (loss) per common share Earnings Per Share [Abstract] Settlement amount Litigation Settlement, Amount Awarded from Other Party Anniversary 3 Share-Based Payment Arrangement, Tranche Three [Member] 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 Exercised (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Accounting Policies [Abstract] Line of Credit Line of Credit [Member] Variable lease expense Variable Lease, Cost Income before provision (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 Income (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 Tax Credit Carryforward [Line Items] Tax Credit Carryforward [Line Items] 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) Certain Acquired Companies Series of Individually Immaterial Business Acquisitions [Member] Customer relationships Customer Relationships [Member] Entity Address, City or Town Entity Address, City or Town Leases [Abstract] Leases [Abstract] Total equity Beginning balance Ending balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Principles of Consolidation Consolidation, Policy [Policy Text Block] Each quarter through 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 Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Unamortized debt issuance costs Debt Issuance Costs, Net Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Brazil BRAZIL December 31, 2021 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] Consolidated debt ratio (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 LIBOR London Interbank Offered Rate (LIBOR) [Member] 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 2025 Lessee, Operating Lease, Liability, to be Paid, Year Three 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 Contingent consideration payment period based upon achievement of specific performance metrics Business Combination, Contingent Consideration Payment Period Business Combination, Contingent Consideration Payment Period 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 Finance leases Right-of-Use Asset Obtained in Exchange for Finance Lease Liability 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 Vesting [Domain] Vesting [Domain] Entity Interactive Data Current Entity Interactive Data Current Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Acquisition and Disposition Related Contingencies Acquisition Related Contingencies [Member] Represents the contingencies pertaining to business acquisitions by the entity. Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Changes in operating assets and liabilities, net of effect of acquisitions 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 Retained earnings (deficit) Retained Earnings [Member] Financial information by segment Segment Reporting Information [Line Items] Unrecognized compensation costs Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount Gain on settlement Gain (Loss) Related to Litigation Settlement Total Lease, Cost 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 Schedule of Components of Lease Costs and Other Information Related to Leases Lease, Cost [Table Text Block] 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 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] ROU liability - long-term Operating Lease, Liability, Noncurrent Statistical Measurement [Axis] Statistical Measurement [Axis] Related Party Transaction [Axis] Related Party Transaction [Axis] Accumulated deficit Retained Earnings (Accumulated Deficit) Disposal Group Name [Axis] Disposal Group Name [Axis] Reversal of severance obligations Loss Contingency Accrual, Reversals Loss Contingency Accrual, Reversals Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Equity Components [Axis] Equity Components [Axis] Anniversary 4 Share-based Compensation Award, Tranche Four [Member] Share-based Compensation Award, Tranche Four Litigation Case [Domain] Litigation Case [Domain] Segment Disclosure 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 - financing cash flows Finance Lease, Principal Payments Line of credit, borrowings in non US-dollar currencies Line of Credit Facility, Maximum Borrowing Capacity, Non US-Dollar Currencies Line of Credit Facility, Maximum Borrowing Capacity, Non US-Dollar Currencies Consideration received on sale of subsidiary Disposal Group, Including Discontinued Operation, Consideration Contingent consideration, current portion Business Combination, Contingent Consideration, Liability, Current 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 Each quarter thereafter 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] ROU assets Operating Lease, Right-of-Use Asset Accumulated other comprehensive income (loss) AOCI Attributable to Parent [Member] Document Transition Report Document Transition Report Local Phone Number Local Phone Number Schedule of Stock Option Activity Share-Based Payment Arrangement, Option, Activity [Table Text Block] Income 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 State and Local Jurisdiction State and Local Jurisdiction [Member] 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 Beginning balance Ending balance Goodwill Property, Plant and Equipment, Type [Axis] Long-Lived Tangible Asset [Axis] Adjustments to reconcile net income (loss) to net cash provided by operating activities Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Provision (benefit) for income taxes Income Tax Expense (Benefit) Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Geographical [Domain] Geographical [Domain] Valuation allowance as of period end Deferred Tax Assets, Valuation Allowance Deferred income taxes Deferred Income Tax Liabilities, Net 2026 Lessee, Operating Lease, Liability, to be Paid, Year Four Number of equity incentive plans Number Of Employee Share-Based Plans Number Of Employee Share-Based Plans Income Statement [Abstract] Income Statement [Abstract] Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross Additional paid-in capital Additional Paid-in Capital [Member] Document Fiscal Period Focus Document Fiscal Period Focus Basic earnings (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 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). Litigation Loss Contingencies [Line Items] Foreign currency translation Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Foreign Currency Translation Adjustments Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Foreign Currency Translation Adjustments Buildings and improvements Building and Building Improvements [Member] Foreign Subsidiaries Disposal Of Foreign Subsidiaries [Member] Disposal Of Foreign Subsidiaries [Member] Common stock, $0.01 par value, 200,000,000 shares authorized, 29,807,038 and 29,546,263 shares issued and outstanding Common Stock, Value, Issued Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [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] Short-term lease expense Short-Term Lease, Cost 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 Senior debt to EBITDA ratio Debt Instrument, Covenant Compliance, Senior Debt To Earnings Before Income Taxes, Depreciation And Amortization Ratio Debt Instrument, Covenant Compliance, Senior Debt To Earnings Before Income Taxes, Depreciation And Amortization Ratio 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. 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 Acquisitions Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases Deferred revenue Contract with Customer, Liability, Current Interest on lease liabilities Finance Lease, Interest Expense 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 JP Morgan Chase Bank Credit Agreement The Credit Agreement, JP Morgan Chase Bank [Member] The Credit Agreement, JP Morgan Chase Bank Fair value measurements Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Less: net income attributable to noncontrolling interest Net Income (Loss) Attributable to Noncontrolling Interest, Excluding Foreign Currency Transaction And Translation Gain (Loss) Net Income (Loss) Attributable to Noncontrolling Interest, Excluding Foreign Currency Transaction And Translation Gain (Loss) 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 Operating lease expense Operating Lease, Cost Term loan Debt Instrument, Face Amount Number of proceedings Loss Contingency, New Claims Filed, Number Other comprehensive loss, net of tax Other Comprehensive Income (Loss), Net of Tax Comprehensive income (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 [Member] Represents International, a business segment of the entity. Pension accrual 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. 2023 Finance Lease, Liability, to be Paid, Year One Depreciation and amortization Depreciation, Depletion and Amortization Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Operating Lease Arrangement Operating Lease Arrangement [Member] Operating Lease Arrangement Outstanding at beginning of period (in shares) Outstanding at end of period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code 2024 Finance Lease, Liability, to be Paid, Year Two Liabilities Liabilities [Abstract] 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 Total rent payments Operating - operating cash flows Operating Lease, Payments 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] Potential acquisition-related contingent consideration, high end of range Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High Title of Individual [Domain] Title of Individual [Domain] Allowance for credit losses Accounts Receivable, Allowance for Credit Loss, Current 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 Accrued expenses and other current liabilities 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 Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] 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 Weighted-average discount rate Weighted Average Discount Rate, Percent [Abstract] Weighted Average Discount Rate, Percent Software/Technology Computer Software, Intangible Asset [Member] Property, Plant and Equipment, net Property, Plant and Equipment Disclosure [Text Block] Common Stock Options Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward] Property, Plant and Equipment, Type [Domain] Long-Lived Tangible Asset [Domain] Percentage of reduction of rental payments Operating Lease, Percentage Of Reduction Of Rental Payments Operating Lease, Percentage Of Reduction Of Rental Payments 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 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] Payment of financing costs Finance costs incurred Payments of Debt Issuance Costs Total ROU liabilities ROU liabilities Lease liability Operating Lease, Liability Segment Disclosure Segment Reporting Disclosure [Text Block] Total Finance Lease, Liability, to be Paid Schedule of Maturities of Finance Lease Liabilities Finance Lease, Liability, Fiscal Year Maturity [Table 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. 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 Granted (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Settlement liability Litigation Settlement, Amount Awarded to Other Party 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 Weighted-average common shares outstanding: Denominator: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Inventories Inventory, Net Pension Related Contingencies Withdrawal from Multiemployer Defined Benefit Plan [Member] Accounts payable Accounts Payable, Current Income Tax Authority [Axis] Income Tax Authority [Axis] Accretion of liability Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Accretion Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Accretion Basic (in dollars per share) Basic income (loss) per share (in dollars per share) Income (Loss) from Continuing Operations, Per Basic Share 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 issuance cost Write off of Deferred Debt Issuance Cost Entity Filer Category Entity Filer Category Basic (in shares) Weighted average common shares outstanding, basic (in shares) Weighted Average Number of Shares Outstanding, Basic Equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] United States UNITED STATES Liabilities: Liabilities, Fair Value Disclosure [Abstract] Recognized share-based compensation expense Recognized share-based compensation expense (benefit) Share-Based Payment Arrangement, Expense Commitments and contingencies Commitments and Contingencies Security Exchange Name Security Exchange Name Outstanding at 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, Options, Outstanding, Weighted Average Exercise Price 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] Consolidated debt ratio (less than) Debt Instrument, Covenant, Consolidated Debt Leverage Ratio, Lowest Available Margin Applicable Debt Instrument, Covenant, Consolidated Debt Leverage Ratio, Lowest Available Margin Applicable Finance leases Finance Lease, Weighted Average Discount Rate, Percent Revenue Revenue from Contract with Customer [Text Block] Segment Reporting [Abstract] Segment Reporting [Abstract] Noncontrolling Interest Noncontrolling Interest [Member] 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 Term of credit facility Debt Instrument, Term Expensed finance costs Amortization of Debt Issuance Costs Related Party [Axis] Related Party [Axis] Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Goodwill [Roll Forward] Goodwill [Roll Forward] Land Land [Member] Diluted earnings (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 Expense Schedule of Business Combination Acquisition Related Costs [Table Text Block] Tabular disclosure of acquisition-related costs. Acquisition of business, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Current Fiscal Year End Date Current Fiscal Year End Date Less: Present value discount Lessee, Operating Lease, Liability, Undiscounted Excess Amount Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Vesting [Axis] Vesting [Axis] Intangible assets, net Net Carrying Amount Intangible Assets, Net (Excluding Goodwill) Anniversary 2 Share-Based Payment Arrangement, Tranche Two [Member] 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 Share-based compensation 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 Cash paid for amounts included in the measurement of lease liabilities for finance and operating leases Cash Flow, Lessee [Abstract] Cash Flow, Lessee Reporting Unit [Domain] Reporting Unit [Domain] Options fully vested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested, Number of Shares 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. 2024 Lessee, Operating Lease, Liability, to be Paid, Year Two Schedule of Accounts Receivable, Net Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Petrochemical Petrochemical [Member] Petrochemical Term of agreement to purchase products from the buyer on sale of subsidiary Long-Term Purchase Commitment, Period 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. Schedule of Maturities of Operating Lease Liabilities Lessee, Operating Lease, Liability, Maturity [Table Text Block] Entity Address, Address Line One Entity Address, Address Line One Income Tax Authority [Domain] Income Tax Authority [Domain] Product and Service [Axis] Product and Service [Axis] Europe Europe [Member] Less: Foreign currency translation adjustments attributable to noncontrolling interests Foreign Currency Transaction And Translation Gain (Loss), Net Of Tax, Attributable To Noncontrolling Interest Foreign Currency Transaction And Translation Gain (Loss), Net Of Tax, Attributable To Noncontrolling Interest Finance leases Finance Lease, Weighted Average Remaining Lease Term 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] Tax Credit Carryforward [Table] Tax Credit Carryforward [Table] 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] Company's Headquarters Building [Member] 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 Entity Tax Identification Number Entity Tax Identification Number Capitalized costs associated with debt modifications Unamortized Debt Issuance Expense Performance condition adjustments (in dollars per share) Share-based Compensation Arrangement By Share-based Payment Award, Equity Instruments Other Than Options, Adjustments In Period, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement By Share-based Payment Award, Equity Instruments Other Than Options, Adjustments In Period, Weighted Average Grant Date Fair Value 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 Total consolidated leverage ratio, limit after investment in non-guarantor subsidiary Debt Instrument, Covenant Compliance, Total Consolidated Debt Leverage Ratio, After Investment In Guarantor Subsidiary Debt Instrument, Covenant Compliance, Total Consolidated Debt Leverage Ratio, After Investment In Guarantor Subsidiary Finance - operating cash flows Finance Lease, Interest Payment on Liability 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). 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 Extension term under agreement to purchase products from buyer Long-Term Purchase Commitment, Extension Period Long-Term Purchase Commitment, Extension Period Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Net settlement of restricted stock units Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation 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 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 Earnings (loss) per Share Earnings Per Share, Policy [Policy Text Block] 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] Less: Present value discount Finance Lease, Liability, Undiscounted Excess Amount 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] Amount of purchased commitment to buy products from the buyer on sale of subsidiary Long-Term Purchase Commitment, Amount Remaining balance under purchase commitment agreement Purchase Commitment, Remaining Minimum Amount Committed Schedule of Computations of Basic and Diluted Earnings (Loss) per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Operating leases Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Maximum borrowing capacity in non-U.S. Dollar currencies Line Of Credit Facility Maximum Borrowing Capacity In Non-U.S. Currencies Represents the maximum borrowing capacity in non-U.S. dollar currencies under the revolving credit facility. Customer [Domain] Customer [Domain]