Leases [Abstract] Operating lease cost Operating Lease, Cost Short-term cost Short-term Lease, Cost Variable lease cost Variable Lease, Cost Amortization of leased assets Finance Lease, Right-of-Use Asset, Amortization Interest on lease liabilities Finance Lease, Interest Expense Total lease cost Lease, Cost Earnings Per Share [Abstract] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Antidillutive options and shares Antidillutive options and shares [Member] Antidillutive options and shares [Member] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Basic and dilutive net income (loss) available to common shareholders Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Basic weighted average shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Effect of dilutive securities: Dilutive Securities, Effect on Basic Earnings Per Share [Abstract] Unvested shares and stock units (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Dilutive weighted average shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Diluted Basic earnings (loss) per share (in dollars per share) Earnings Per Share, Basic Diluted earnings (loss) per share (in dollars per share) Earnings Per Share, Diluted Antidilutive securities excluded from computation of earnings per share, amount (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Income Tax Disclosure [Abstract] Effective tax rate Effective Income Tax Rate Reconciliation, Percent Retirement Benefits [Abstract] Schedule of Costs of Retirement Plans Schedule of Costs of Retirement Plans [Table Text Block] Operating lease, Weighted Average Remaining Lease Operating Lease, Weighted Average Remaining Lease Term Operating lease, Weighted Average Discount Rate Operating Lease, Weighted Average Discount Rate, Percent Finance lease, Weighted Average Remaining Lease Finance Lease, Weighted Average Remaining Lease Term Finance lease, Weighted Average Discount Rate Finance Lease, Weighted Average Discount Rate, Percent Statement of Cash Flows [Abstract] Operating Activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Net loss Adjustments to reconcile net loss to cash flows from operating activities: Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization Lease amortization and accretion expense Lease Amortization And Accretion Expense Lease Amortization And Accretion Expense Lease payments Operating And Finance Lease, Payments Operating And Finance Lease, Payments Equity-based compensation and employee benefits expense Share-based Compensation (Gains)/losses on property disposals, net Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property Impairment charges Asset Impairment Charges Deferred income tax benefit, net Deferred Income Tax Expense (Benefit) Other noncash items, net Other Noncash Income (Expense) Changes in assets and liabilities, net: Increase (Decrease) in Operating Capital [Abstract] Accounts receivable Increase (Decrease) in Accounts Receivable Accounts payable Increase (Decrease) in Accounts Payable, Trade Other operating assets Increase (Decrease) in Other Operating Assets Other operating liabilities Increase (Decrease) in Other Operating Liabilities Net cash provided by (used in) operating activities Net Cash Provided by (Used in) Operating Activities Investing Activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Acquisition of property and equipment Payments to Acquire Property, Plant, and Equipment Proceeds from disposal of property and equipment Proceeds from Sale of Property, Plant, and Equipment Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Financing Activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Repayments of long-term debt Repayments of Long-term Debt Payments for tax withheld on equity-based compensation Payments Related to Tax Withholding for Share-based Compensation Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Net Increase (Decrease) In Cash, Cash Equivalents and Restricted Amounts Held in Escrow Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Cash, Cash Equivalents and Restricted Amounts Held in Escrow, Beginning of Period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash, Cash Equivalents and Restricted Amounts Held in Escrow, End of Period Supplemental Cash Flow Information: Supplemental Cash Flow Information [Abstract] Interest paid Interest Paid, Excluding Capitalized Interest, Operating Activities Income tax payment, net Income Taxes Paid, Net Schedule of Defined Benefit Plans Disclosures [Table] Schedule of Defined Benefit Plans Disclosures [Table] Retirement Plan Type [Axis] Retirement Plan Type [Axis] Retirement Plan Type [Domain] Retirement Plan Type [Domain] Other Postretirement Benefit Plans, Defined Benefit Other Postretirement Benefits Plan [Member] Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Service cost Defined Benefit Plan, Service Cost Interest cost Defined Benefit Plan, Interest Cost Expected return on plan assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Amortization of prior service credit Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Amortization of prior net pension loss Defined Benefit Plan, Amortization of Gain (Loss) Total periodic pension cost Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Expected future benefit payments, remainder of the year Defined Benefit Plan, Expected Future Benefit Payment, Remainder of Fiscal Year Contributions by employer Defined Benefit Plan, Plan Assets, Contributions by Employer Debt Disclosure [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] London Interbank Offered Rate (LIBOR) London Interbank Offered Rate (LIBOR) [Member] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] 2014 ABL Facility Credit Agreement 2014 ABL Facility Credit Agreement [Member] 2014 ABL Facility Credit Agreement [Member] Term Loan Agreement Term Loan Agreement [Member] Term Loan Agreement [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Term Loan Term Loan [Member] Term Loan ABL Facility Line of Credit [Member] Secured Second A&R CDA Secured Second A&R CDA [Member] Secured Second A&R CDA [Member] Unsecured Second A&R CDA Unsecured Second A&R CD [Member] Unsecured Second A&R CD [Member] Lease financing obligations Lease financing obligations [Member] Lease financing obligations [Member] Other Debt Obligations Other Debt Obligations [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Fair Value, by Balance Sheet Grouping, Disclosure Item Amounts [Axis] Measurement Basis [Axis] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Portion at Fair Value Measurement [Member] Portion at Fair Value Measurement [Member] Book Value Reported Value Measurement [Member] Fair value Estimate of Fair Value Measurement [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Par Value Long-term Debt, Gross Discount Debt Instrument, Unamortized Discount (Premium), Net Debt Issuance Costs Debt Issuance Costs, Noncurrent, Net Book Value Long-term Debt Par Value, Current Maturities Debt Instrument, Gross, Current Maturities Debt Instrument, Gross, Current Maturities Discount, Current Maturities Debt Instrument, Unamortized Discount (Premium), Net, Current Maturities Debt Instrument, Unamortized Discount (Premium), Net, Current Maturities Deferred Issuance Costs, Current Debt Issuance Costs, Current, Net Book Value, Current Maturities Long-term Debt, Current Maturities Par Value, Excluding Current Maturities Debt Instrument, Face Amount, Excluding Current Maturities Debt Instrument, Face Amount, Excluding Current Maturities Premium (Discount) Debt Instrument, Unamortized Discount (Premium), Net, Noncurrent Maturities Debt Instrument, Unamortized Discount (Premium), Net, Noncurrent Maturities Book Value, Excluding Current Maturities Long-term Debt, Excluding Current Maturities Average Effective Interest Rate Debt Instrument, Interest Rate, Effective Percentage Floor interest rate Debt Instrument, Floor Interest Rate Debt Instrument, Floor Interest Rate Basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Line of credit facility, total cash and availability Line Of Credit Facility, Total Cash and Availability Line Of Credit Facility, Total Cash and Availability Total cash and cash equivalents and Managed Accessibility Cash, Cash Equivalents And Managed Accessibility Cash, Cash Equivalents And Managed Accessibility Managed Accessibility Line Of Credit Facility, Total Able to Be Drawn Line Of Credit Facility, Total Able to Be Drawn Changes to restricted cash Restricted Cash Maximum Total Leverage Ratio, June 30, 2019 Debt Instrument, Covenant, Maximum Total Leverage Ratio, Quarter Nine Debt Instrument, Covenant, Maximum Total Leverage Ratio, Quarter Nine Maximum Total Leverage Ratio, September 30, 2019 Debt Instrument, Covenant, Maximum Total Leverage Ratio, Quarter Ten Debt Instrument, Covenant, Maximum Total Leverage Ratio, Quarter Ten Maximum Total Leverage Ratio, December 31, 2019 Debt Instrument, Covenant, Maximum Total Leverage Ratio, Quarter Eleven Debt Instrument, Covenant, Maximum Total Leverage Ratio, Quarter Eleven Maximum Total Leverage Ratio, March 31, 2020 Debt Instrument, Covenant, Maximum Total Leverage Ratio, Quarter Twelve Debt Instrument, Covenant, Maximum Total Leverage Ratio, Quarter Twelve Maximum Total Leverage Ratio, June 30, 2020 Debt Instrument, Covenant, Maximum Total Leverage Ratio, Quarter Thirteen Debt Instrument, Covenant, Maximum Total Leverage Ratio, Quarter Thirteen Maximum Total Leverage Ratio, September 30, 2020 Debt Instrument, Covenant, Maximum Total Leverage Ratio, Quarter Fourteen Debt Instrument, Covenant, Maximum Total Leverage Ratio, Quarter Fourteen Maximum Total Leverage Ratio, December 31, 2020 Debt Instrument, Covenant, Maximum Total Leverage Ratio, Quarter Fifteen Debt Instrument, Covenant, Maximum Total Leverage Ratio, Quarter Fifteen Maximum Total Leverage Ratio, March 31, 2021 Debt Instrument, Covenant, Maximum Total Leverage Ratio, Quarter Sixteen Debt Instrument, Covenant, Maximum Total Leverage Ratio, Quarter Sixteen Maximum Total Leverage Ratio, June 30, 2021 and thereafter Debt Instrument, Covenant, Maximum Total Leverage Ratio, Quarter Seventeen And Thereafter Debt Instrument, Covenant, Maximum Total Leverage Ratio, Quarter Seventeen And Thereafter Total leverage ratio Debt Instrument, Total Leverage Ratio Debt Instrument, Total Leverage Ratio Long-term debt, fair value Long-term Debt, Fair Value Organization, Consolidation and Presentation of Financial Statements [Abstract] Revenue from External Customers by Products and Services [Table] Revenue from External Customers by Products and Services [Table] Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Operating Segments Operating Segments [Member] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Regional Transportation Regional Transportation [Member] Regional Transportation [Member] YRC Freight YRC Freight [Member] YRC Freight [Member] Product and Service [Axis] Product and Service [Axis] Product and Service [Domain] Product and Service [Domain] LTL revenue LTL Revenue [Member] LTL Revenue [Member] Other revenue Other Revenue [Member] Other Revenue [Member] Revenue from External Customer [Line Items] Revenue from External Customer [Line Items] Revenue Revenue from Contract with Customer, Including Assessed Tax Segment Reporting [Abstract] Business Segments Segment Reporting Disclosure [Text Block] Operating leases Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] Total Operating Leases, Future Minimum Payments Due Less than 1 year Operating Leases, Future Minimum Payments Due, Next Twelve Months 1-3 years Operating Leases, Future Minimum Payments, Due in Two and Three Years 3-5 years Operating Leases, Future Minimum Payments, Due in Four and Five Years After 5 years Operating Leases, Future Minimum Payments, Due Thereafter Operating cash flows from operating leases (a) Operating Lease, Payments Operating cash flows from finance leases Finance Lease, Interest Payment on Liability Financing cash flows from finance leases Finance Lease, Principal Payments Leased assets obtained in exchange for new operating lease liabilities Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Accounting Policies [Abstract] Description of Business Business Description and Basis of Presentation [Text Block] Operating lease right-of-use assets Operating Lease, Right-of-Use Asset Finance lease assets Finance Lease, Right-of-Use Asset Total leased assets Right-Of-Use Asset Right-Of-Use Asset Current operating lease liabilities Operating Lease, Liability, Current Current finance lease liabilities Finance Lease, Liability, Current Operating lease liabilities, noncurrent Operating Lease, Liability, Noncurrent Finance lease liabilities, noncurrent Finance Lease, Liability, Noncurrent Present value of lease liabilities Lease, Liability Lease, Liability Leases Lessee, Finance Leases [Text Block] Leases Lessee, Operating Leases [Text Block] Lessee, Assets And Liabilities Lessee, Assets And Liabilities [Table Text Block] Lessee, Assets And Liabilities [Table Text Block] Lease, Cost Lease, Cost [Table Text Block] Finance Lease, Liability, Maturity Finance Lease, Liability, Maturity [Table Text Block] Lessee, Operating Lease, Liability, Maturity Lessee, Operating Lease, Liability, Maturity [Table Text Block] Lessee, Lease Term And Discount Rate Lessee, Lease Term And Discount Rate [Table Text Block] Lessee, Lease Term And Discount Rate [Table Text Block] Lessee, Supplemental Cash Flow Lessee, Supplemental Cash Flow [Table Text Block] Lessee, Supplemental Cash Flow [Table Text Block] Schedule of Future Minimum Rental Payments for Operating Leases Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Preferred Stock: Preferred Stock [Member] Common Stock: Common Stock [Member] Capital Surplus: Additional Paid-in Capital [Member] Accumulated Deficit: Retained Earnings [Member] Accumulated Other Comprehensive Loss: AOCI Attributable to Parent [Member] Amortization of prior net losses Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Amortization of prior service credit Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member] Foreign currency translation adjustments Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Treasury Stock, At Cost: Treasury Stock [Member] Statement [Line Items] Statement [Line Items] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Equity-based compensation Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Net income (loss) Change in other comprehensive income Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Ending balance Statement of Financial Position [Abstract] Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Treasury stock, shares (in shares) Treasury Stock, Shares Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Total cash and cash equivalents and Managed Accessibility Debt and Financing Debt Disclosure [Text Block] Income Taxes Income Tax Disclosure [Text Block] Schedule of Debt Schedule of Debt [Table Text Block] Schedule Of Cash And Cash Equivalents And Managed Accessibility Schedule Of Cash And Cash Equivalents And Managed Accessibility [Table Text Block] Schedule Of Cash And Cash Equivalents And Managed Accessibility [Table Text Block] Schedule of Maximum Total Leverage Ratio for Remaining Test Periods Schedule of Maximum Total Leverage Ratio for Remaining Test Periods [Table Text Block] Schedule of Maximum Total Leverage Ratio for Remaining Test Periods [Table Text Block] Schedule of Carrying Values and Estimated Fair Values of Debt Instruments Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block] Earnings (Loss) Per Share Earnings Per Share [Text Block] Assets Assets [Abstract] Cash and cash equivalents Restricted amounts held in escrow Restricted Cash and Cash Equivalents, Current Accounts receivable, net Accounts Receivable, Net, Current Prepaid expenses and other Prepaid Expense and Other Assets, Current Total current assets Assets, Current Property and Equipment: Property, Plant and Equipment, Net [Abstract] Cost Property, Plant and Equipment, Gross Less – accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Net property and equipment Property, Plant and Equipment, Net Deferred income taxes, net Deferred Tax Assets, Net of Valuation Allowance Other assets Other Assets, Noncurrent Total Assets Assets Liabilities and Shareholders’ Deficit Liabilities and Equity [Abstract] Accounts payable Accounts Payable, Current Wages, vacations and employee benefits Employee-related Liabilities, Current Claims and insurance accruals Claims And Insurance Accruals Current Claims And Insurance Accruals Current Other accrued taxes Accrued Payroll Taxes, Current Other current and accrued liabilities Other Accrued Liabilities, Current Current maturities of long-term debt Total current liabilities Liabilities, Current Other Liabilities: Liabilities, Noncurrent [Abstract] Long-term debt, less current portion Deferred income taxes, net Deferred Tax Liabilities, Net, Noncurrent Pension and postretirement Liability, Defined Benefit Plan, Noncurrent Operating lease liabilities Claims and other liabilities Claims and Insurance Accruals Noncurrent Claims and insurance accruals noncurrent. Commitments and contingencies Commitments and Contingencies Shareholders’ Deficit: Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Preferred stock, $1 par value per share Preferred Stock, Value, Issued Common stock, $0.01 par value per share Common Stock, Value, Issued Capital surplus Additional Paid in Capital Accumulated deficit Retained Earnings (Accumulated Deficit) Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Treasury stock, at cost (410 shares) Treasury Stock, Value Total shareholders’ deficit Stockholders' Equity Attributable to Parent Total Liabilities and Shareholders’ Deficit Liabilities and Equity Schedule of Segment Reporting Information, by Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Operating Leases Operating Lease Liabilities, Payments Due [Abstract] 2019 Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year 2020 Lessee, Operating Lease, Liability, Payments, Due Year Two 2021 Lessee, Operating Lease, Liability, Payments, Due Year Three 2022 Lessee, Operating Lease, Liability, Payments, Due Year Four 2023 Lessee, Operating Lease, Liability, Payments, Due Year Five After 2023 Lessee, Operating Lease, Liability, Payments, Due after Year Five Total lease payments Lessee, Operating Lease, Liability, Payments, Due Less: Imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Present value of lease liabilities Operating Lease, Liability Finance Leases Finance Lease Liabilities, Payments, Due [Abstract] 2019 Finance Lease, Liability, Payments, Remainder of Fiscal Year 2020 Finance Lease, Liability, Payments, Due Year Two 2021 Finance Lease, Liability, Payments, Due Year Three 2022 Finance Lease, Liability, Payments, Due Year Four 2023 Finance Lease, Liability, Payments, Due Year Five After 2023 Finance Lease, Liability, Payments, Due after Year Five Total lease payments Finance Lease, Liability, Payments, Due Less: Imputed interest Finance Lease, Liability, Undiscounted Excess Amount Present value of lease liabilities Finance Lease, Liability Total Operating And Finance Lease Liabilities, Payments, Due [Abstract] Operating And Finance Lease Liabilities, Payments, Due [Abstract] 2019 Operating And Finance Lease, Liability, Payments, Remainder Of Fiscal Year Operating And Finance Lease, Liability, Payments, Remainder Of Fiscal Year 2020 Operating And Finance Lease, Liability, Payments, Due Year Two Operating And Finance Lease, Liability, Payments, Due Year Two 2021 Operating And Finance Lease, Liability, Payments, Due Year Three Operating And Finance Lease, Liability, Payments, Due Year Three 2022 Operating And Finance Lease, Liability, Payments, Due Year Four Operating And Finance Lease, Liability, Payments, Due Year Four 2023 Operating And Finance Lease, Liability, Payments, Due Year Five Operating And Finance Lease, Liability, Payments, Due Year Five After 2023 Operating And Finance Lease, Liability, Payments, Due After Year Five Operating And Finance Lease, Liability, Payments, Due After Year Five Total lease payments Operating And Finance Lease, Liability, Payments, Due Operating And Finance Lease, Liability, Payments, Due Less: Imputed interest Operating And Finance Lease, Liability, Undiscounted Excess Amount Operating And Finance Lease, Liability, Undiscounted Excess Amount Statement of Comprehensive Income [Abstract] Operating Revenue Operating Expenses: Operating Expenses [Abstract] Salaries, wages and employee benefits Labor and Related Expense Fuel, operating expenses and supplies Cost, Direct Material Purchased transportation Purchased Transportation Costs incurred related to the purchase of services (road and rail) from third-party transportation providers and independent contractors in direct support of shipping and logistics services. Depreciation and amortization Cost, Depreciation and Amortization Other operating expenses Other Cost and Expense, Operating (Gains) losses on property disposals, net Gain (Loss) on Disposition of Property Plant Equipment Impairment charges Total operating expenses Operating Expenses Operating Income (Loss) Operating Income (Loss) Nonoperating Expenses: Nonoperating Income (Expense) [Abstract] Interest expense Interest Expense Non-union pension and postretirement benefits Non Union Pension And Postretirement Benefits Non Union Pension And Postretirement Benefits Other, net Other Nonoperating Income (Expense) Nonoperating expenses, net Nonoperating Income (Expense) Income (loss) before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income tax expense (benefit) Income Tax Expense (Benefit) Net income (loss) Other comprehensive income, net of tax Other Comprehensive Income (Loss), Net of Tax Comprehensive Income (Loss) Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Average Common Shares Outstanding – Basic (in shares) Average Common Shares Outstanding – Diluted (in shares) Basic and Diluted Loss Per Share Earnings Per Share, Basic and Diluted [Abstract] Income (loss) Per Share – Basic (in dollars per share) Income (loss) Per Share – Diluted (in dollars per share) Concentration Risk [Table] Concentration Risk [Table] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Workforce Subject to Collective Bargaining Arrangements [Member] Workforce Subject to Collective Bargaining Arrangements [Member] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Labor Force Concentration Risk [Member] Labor Force Concentration Risk [Member] Concentration Risk [Line Items] Concentration Risk [Line Items] Percentage of workforce subject to collective bargaining agreements Concentration Risk, Percentage Document And Entity Information [Abstract] Document and Entity Information [Abstract] Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Entity Current Reporting Status Entity Current Reporting Status Entity Shell Company Entity Shell Company Entity Emerging Growth Company Entity Emerging Growth Company Entity Small Business Entity Small Business Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Employee Benefits Pension and Other Postretirement Benefits Disclosure [Text Block] Basis of Presentation Basis of Accounting [Text Block] Revenue Disaggregation Revenue Recognition, Policy [Policy Text Block] Newly Adopted Accounting Standards and Impact of Recently Issued Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] Schedule of Earnings Per Share, Basic and Diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Commitments and Contingencies Disclosure [Abstract] Commitments, Contingencies and Uncertainties Commitments and Contingencies Disclosure [Text Block] New Accounting Pronouncements or Change in Accounting Principle [Table] New Accounting Pronouncements or Change in Accounting Principle [Table] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] Accounting Standards Update 2016-02 Accounting Standards Update 2016-02 [Member] New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Line Items] Operating lease liability Lease deposits Lease Deposits Lease Deposits Operating lease liabilities, noncurrent Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Corporate/ Eliminations Consolidation, Eliminations [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Number of reportable segments Number of Reportable Segments Identifiable assets External revenue Operating income (loss) Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block]