Number of helicopters Purchase Commitment, Number Of Helicopters Purchase Commitment, Number Of Helicopters EL9 Aircraft EL9 Aircraft [Member] EL9 Aircraft Restricted cash Restricted Cash, Current Award Timing Predetermined Award Timing Predetermined [Flag] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Entity File Number Entity File Number Additional Paid-in Capital Additional Paid-in Capital [Member] Earnings from unconsolidated affiliates Income (Loss) from Equity Method Investments Tabular List, Table Tabular List [Table Text Block] Income tax expense Other Comprehensive Income (Loss), Tax ABL Facility Asset Backed Revolving Credit Facility [Member] Asset Backed Revolving Credit Facility Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Basic (in dollars per share) Earnings per common share - basic (in dollars per share) Earnings Per Share, Basic Other Other Expenses Adjustment to Compensation: Adjustment to Compensation [Axis] RELATED PARTY TRANSACTIONS Related Party Transactions Disclosure [Text Block] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] REVENUES Revenue from Contract with Customer [Text Block] Total other comprehensive income (loss), net of tax Other comprehensive loss Other Comprehensive Income (Loss), Net of Tax Schedule of Operating Performance and Total Assets by Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] DERIVATIVE FINANCIAL INSTRUMENTS Derivatives and Fair Value [Text Block] Remaining performance obligation, amount Revenue, Remaining Performance Obligation, Amount Adjustment to Compensation, Amount Adjustment to Compensation Amount Basis of Consolidation Consolidation, Policy [Policy Text Block] Stock-based compensation expense Share-Based Payment Arrangement, Noncash Expense Inventory, prepaid expenses and other assets Increase (Decrease) In Operating Assets, Less Receivables Increase (Decrease) In Operating Assets, Less Receivables Employee Stock Option Share-Based Payment Arrangement, Option [Member] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Income taxes, net Income Taxes Paid Total Bristow Group Inc. stockholders’ equity Equity, Attributable to Parent Other comprehensive income (loss): Other Comprehensive Income (Loss), Net of Tax [Abstract] Insider Trading Policies and Procedures [Line Items] Common stock, shares authorized (in shares) Common Stock, Shares Authorized Hedging Designation [Domain] Hedging Designation [Domain] Current assets: Assets, Current [Abstract] Total liabilities and stockholders’ equity Liabilities and Equity Pension Liability Adjustments Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity [Abstract] Cover [Abstract] Cover [Abstract] Net loss (income) attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Debt Instrument [Line Items] Debt Instrument [Line Items] Treasury Stock Treasury Stock, Common [Member] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Pay vs Performance Disclosure [Line Items] Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Depreciation and amortization expense Depreciation, Depletion and Amortization, Nonproduction Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity Shell Company Entity Shell Company Schedule of Fair Value of Debt Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block] Other liabilities and deferred credits Other Liabilities, Noncurrent Debt Instrument [Table] Schedule of Long-Term Debt Instruments [Table] Proceeds from asset dispositions Proceeds from Sale of Property, Plant, and Equipment Proceeds from borrowings Proceeds from Issuance of Debt Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Depreciation expense year one Depreciation Expense, Next Twelve Months Depreciation Expense, Next Twelve Months Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Current maturities of long-term debt Less current maturities of long-term debt Long-Term Debt, Current Maturities Company Selected Measure Amount Company Selected Measure Amount Net comprehensive loss (income) attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Total comprehensive income attributable to Bristow Group Inc. 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balance (in shares) Ending balance (in shares) Common Stock, Shares, Outstanding PEO PEO [Member] Schedule of Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Income taxes payable and other accrued taxes Accrued Income Taxes, Current Increase (decrease) in cash resulting from changes in: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Retained Earnings Retained Earnings [Member] Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Cash, cash equivalents and restricted cash at beginning of period Cash, cash equivalents and restricted cash at end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Income Statement [Abstract] Income Statement [Abstract] Income tax expense Income Tax Expense (Benefit) Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Designated as Hedging Instrument Designated as Hedging Instrument [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Hedging Relationship [Axis] Hedging Relationship [Axis] Unrealized gains on cash flow hedges, net Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax Net income Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Liabilities, fair value Liabilities, Fair Value Disclosure Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Exercise of stock options Proceeds from Stock Options Exercised City Area Code City Area Code Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] All Trading Arrangements All Trading Arrangements [Member] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Voting interest Equity Method Investment, Voting Interest Equity Method Investment, Voting Interest Schedule of Deferred Revenues Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Cash flows from investing activities: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] General and administrative expenses General and Administrative Expense Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Net cash used in operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation 6.750% Senior Notes Six Point Seven Five Zero Percent Senior Notes Due March Twenty Twenty Eight [Member] Six Point Seven Five Zero Percent Senior Notes Due March Twenty Twenty Eight Related Party Transactions [Abstract] Payments to related parties Lease, Cost Cash Flow Hedging Cash Flow Hedging [Member] Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Depreciation expense Depreciation Fair value of outstanding hedges liabilites Derivative Liability, Subject to Master Netting Arrangement, before Offset Equity Components [Axis] Equity Components [Axis] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Number of reportable segments Number of Reportable Segments Cash paid during the period for: Supplemental Cash Flow Information [Abstract] Other Performance Measure, Amount Other Performance Measure, Amount Debt issuance costs Payments of Debt Issuance Costs Entity Address, State or Province Entity Address, State or Province Interest income Interest and Dividend Income, Operating Dividends declared on common stock Dividends, Common Stock Related Party [Domain] Related and Nonrelated Parties [Domain] Total current liabilities Liabilities, Current Individual: Individual [Axis] Depreciation expense remainder of fiscal year Depreciation Expense, Remainder of Fiscal Year Depreciation Expense, Remainder of Fiscal Year Entity [Domain] Entity [Domain] PBH amortization Amortization Net cash used in investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Investment in unconsolidated affiliates Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures Remaining performance obligation, expected timing Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] 6.875% Senior Notes Six Point Eight Seven Five Percent Senior Notes Due March Twenty Twenty Eight [Member] Six Point Eight Seven Five Percent Senior Notes Due March Twenty Twenty Eight Interest Interest Paid, Excluding Capitalized Interest, Operating Activity Document Fiscal Year Focus Document Fiscal Year Focus Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Right-of-use assets Operating Lease, Right-of-Use Asset Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Repayments of debt Repayments of Long-Term Debt Effective income tax rate Effective Income Tax Rate Reconciliation, Percent Entity Interactive Data Current Entity Interactive Data Current Other Services Other Operating Segment [Member] Accounts payable, accrued expenses and other liabilities Increase (Decrease) in Operating Liabilities Equity [Abstract] Equity [Abstract] SEGMENTS Segment Reporting Disclosure [Text Block] Principal payment Debt Instrument, Periodic Payment, Principal Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Cougar Cougar Helicopters Inc. [Member] Cougar Helicopters Inc. Property, Plant and Equipment, Type [Axis] Long-Lived Tangible Asset [Axis] Other Commitments [Line Items] Other Commitments [Line Items] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase limit Line Of Credit Facility, Increase Limit Line Of Credit Facility, Increase Limit Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Schedule of Accumulated Other Comprehensive Income (Loss) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Capital expenditures Payments to Acquire Productive Assets Depreciation and amortization expense Depreciation and amortization expense Depreciation, Depletion and Amortization Other assets Other Assets, Noncurrent Central Index Key Entity Central Index Key PEO Name PEO Name Total revenues Revenues from related parties Revenues Revenues Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Revolving Credit Facility Revolving Credit Facility [Member] Arrangement Duration Trading Arrangement Duration Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Deferred revenue Short-term Contract with Customer, Liability, Current Segments [Axis] Segments [Axis] Exercise Price Award Exercise Price Accrued maintenance and repairs Accrued Maintenance And Repairs Carrying value as of the balance sheet date of obligations incurred and payable for maintenance and repairs, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). 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3,420 and 3,180 shares, respectively Treasury Stock, Value Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Total Segment Total Segment [Member] Total Segment Segments [Domain] Segments [Domain] Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Operating income Operating Income Loss Including Income Loss From Unconsolidated Affiliates And Gain Loss From Sale Of Property Plant And Equipment The net result for the period of deducting operating expense from operating revenue and then adding (deducting) gain (loss) on disposal of assets and earnings (losses) from unconsolidated affiliates. Inventories Inventory, Net Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] Amortization of deferred contract costs Amortization of Other Deferred Charges Accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Company Selected Measure Name Company Selected Measure Name Additional helicopters Purchase Commitment, Additional Number Of Helicopters Purchase Commitment, Additional Number Of Helicopters Senior Notes Senior Notes [Member] DEBT Debt Disclosure [Text Block] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Accounts payable Accounts Payable, Current Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] All Executive Categories All Executive Categories [Member] Earnings from unconsolidated affiliates Income (Loss) from Equity Method Investments, Net of Dividends or Distributions COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] Diluted (in shares) Weighted average shares of common stock outstanding - diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Commitments and contingencies (Note 7) Commitments and Contingencies Total long-lived assets Property, Plant And Equipment, Adjusted Property, Plant And Equipment, Adjusted Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Total comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Entity Small Business Entity Small Business Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Total operating expenses Other Cost and Expense, Operating Non- controlling Interests Noncontrolling Interest [Member] Aircraft Aircraft [Member] Aircraft [Member] Document Transition Report Document Transition Report Underlying Securities Award Underlying Securities Amount Other comprehensive income (loss) Other Comprehensive Income (Loss), before Reclassifications, before Tax Equity Component [Domain] Equity Component [Domain] Document Period End Date Document Period End Date PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount INCOME TAXES Income Tax Disclosure [Text Block] Leased-in equipment Leased-In Equipment Expense Leased-In Equipment Expense Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Hedging Designation [Axis] Hedging Designation [Axis] Total stockholders’ equity Beginning balance Ending balance Equity, Including Portion Attributable to Noncontrolling Interest Document Type Document Type Level 3 Fair Value, Inputs, Level 3 [Member] EARNINGS PER SHARE Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Additional paid-in capital Additional Paid in Capital Pension liability adjustment Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax Accounts receivable, net of allowance of $180 and $181, respectively Accounts receivables Accounts and Other Receivables, Net, Current All Individuals All Individuals [Member] UKSAR Debt UKSAR Debt [Member] UKSAR Debt Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Name Forgone Recovery, Individual Name Total current assets Assets, Current Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Equity Method Investee Equity Method Investee [Member] Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Derivative, maturities Derivative, Term of Contract Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Schedule Of Reconciliation of Operating Profit (Loss) from Segments to Consolidated Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block] Current liabilities: Liabilities, Current [Abstract] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Level 1 Fair Value, Inputs, Level 1 [Member] Schedule of Related Party Transactions, by Related Party [Table] Related Party Transaction [Table] Diluted (in dollars per share) Earnings per common share - diluted (in dollars per share) Earnings Per Share, Diluted Total depreciation and amortization expense Cost, Depreciation and Amortization Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Title of 12(b) Security Title of 12(b) Security Government Services Government Services [Member] Government Services Revenue Recognition [Abstract] Revenue Recognition [Abstract] Treasury stock (in shares) Treasury Stock, Common, Shares Earnings per common share: Earnings Per Share [Abstract] Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] Total other income (expense), net Nonoperating Income (Expense) AW189 Heavy Helicopters AW189 Heavy Helicopters [Member] AW189 Heavy Helicopters [Member] VIH Aviation Group Ltd. VIH Aviation Group Ltd. [Member] VIH Aviation Group Ltd. Economic interest Equity Method Investment, Economic Interest Equity Method Investment, Economic Interest Share repurchases (in shares) Treasury Stock, Shares, Acquired Repairs and maintenance Repairs And Maintenance Expense Repairs And Maintenance Expense Aircraft Purchase Contracts Type [Axis] Aircraft Purchase Contracts Type [Axis] -- None. No documentation exists for this element. -- Award Timing Disclosures [Line Items] Accrued wages, benefits and related taxes Employee-related Liabilities, Current STOCKHOLDERS' EQUITY Equity [Text Block] Net income attributable to Bristow Group Inc. Net income attributable to Bristow Group Inc. Net Income (Loss) Attributable to Parent Expiration Date Trading Arrangement Expiration Date Construction-in-progress Construction in Progress [Member] Stockholders’ equity: Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Property and equipment, net of accumulated depreciation of $357,181 and $341,888, respectively Property, Plant and Equipment, Net Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Income: Net Income (Loss) Attributable to Parent [Abstract] Purchase of treasury stock Payments for Repurchase of Common Stock Adoption Date Trading Arrangement Adoption Date Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Accounts receivable Increase (Decrease) in Accounts Receivable Entity Current Reporting Status Entity Current Reporting Status Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Operating income (loss) Operating income Operating Income (Loss) Line of Credit Line of Credit [Member] Aircraft Purchase Contracts Type [Domain] Aircraft Purchase Contracts Type [Domain] Aircraft Purchase Contracts Type [Domain] Retained earnings Retained Earnings (Accumulated Deficit) Gains (losses) on disposal of assets Losses (gains) on disposal of assets Gains (losses) on disposal of assets Gain (Loss) on Disposition of Property Plant Equipment Corporate Corporate Segment [Member] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Executive Category: Executive Category [Axis] Proceeds from issuance of long-term debt Proceeds from Issuance of Long-Term Debt Current Fiscal Year End Date Current Fiscal Year End Date Unrealized gain (loss) on cash flow hedges Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Statement [Table] Statement [Table] Other, net Other Nonoperating Income (Expense) Adjustments to reconcile net income to net cash from operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Cash flows from financing activities: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Total deferred revenues Contract with Customer, Liability Weighted average common stock excluded from computation of earnings per share (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Shares of common stock: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Purchase obligations Unrecorded Unconditional Purchase Obligation All Adjustments to Compensation All Adjustments to Compensation [Member] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Amendment Flag Amendment Flag Other Commitments [Table] Other Commitments [Table] Termination Date Trading Arrangement Termination Date Net cash provided by (used in) financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Measure: Measure [Axis] BASIS OF PRESENTATION, CONSOLIDATION AND SIGNIFICANT ACCOUNTING POLICIES Basis of Presentation and Significant Accounting Policies [Text Block] IRCG Debt IRCG Debt [Member] IRCG Debt Property, Plant and Equipment, Type [Domain] Long-Lived Tangible Asset [Domain] Basic (in shares) Weighted average shares of common stock outstanding - basic (in shares) Weighted Average Number of Shares Outstanding, Basic Schedule of Earnings Per Share, Basic and Diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] H135 Light Twin Helicopters H135 Light Twin Helicopters [Member] H135 Light Twin Helicopters Segment Reporting [Abstract] Segment Reporting [Abstract] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Amortization of deferred financing fees Amortization of Debt Issuance Costs Entity Tax Identification Number Entity Tax Identification Number Costs and expenses: Less: Costs and Expenses [Abstract] Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock, shares issued (in shares) Common Stock, Shares, Issued Derivative Instruments and Hedging Activities Disclosures [Line Items] Derivative Instruments and Hedging Activities Disclosures [Line Items] Accounting Estimates Use of Estimates, Policy [Policy Text Block] Dividend payments Payments of Dividends Interest expense, net Interest Expense, Nonoperating Trading Arrangement: Trading Arrangement [Axis] Total Shareholder Return Amount Total Shareholder Return Amount Commitment fee percentage Line Of Credit Facility, Percent Guaranteed Line Of Credit Facility, Percent Guaranteed Currency translation adjustments Foreign exchange rate impact Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Insider Trading Arrangements [Line Items] Security Exchange Name Security Exchange Name Total liabilities Liabilities Total capital expenditures Capital Expenditures Incurred but Not yet Paid Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Common stock, $0.01 par value, 110,000 authorized; 33,026 and 32,357 issued, respectively, and 29,606 and 29,177 outstanding, respectively Common Stock, Value, Outstanding Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Operating expenses Operating Expenses [Abstract] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Accrued interest and other accrued liabilities Other Liabilities, Current Total operating expenses Other Cost And Expense, Operating, Adjusted Other Cost And Expense, Operating, Adjusted Statement [Line Items] Statement [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Cash and cash equivalents Cash and Cash Equivalent Common Stock Common Stock [Member] Net income (loss) Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Net increase (decrease) in cash, cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation