Entity Address, City or Town Entity Address, City or Town Earnings Per Share [Abstract] Paid-in-kind interest Paid-in-Kind Interest Financing Activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Fair Value Measurement [Domain] Amendment Flag Amendment Flag 2027 Long-Term Debt, Maturity, Year Four Deferred income taxes, net Deferred Income Tax Assets, Net Deferred Income Tax Assets, Net, Total Operating lease right-of-use assets Operating Lease, Right-of-Use Asset Document Quarterly Report Document Quarterly Report Debt Instrument [Table] Schedule of Long-Term Debt Instruments [Table] Less: imputed interest Less: imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Statement [Table] Statement [Table] Operating lease liabilities Operating Lease, Liability, Noncurrent Noncurrent operating lease liabilities Operating cash flows from operating leases Operating Lease, Payments London Interbank Offered Rate (LIBOR) London Interbank Offered Rate (LIBOR) [Member] LIBOR Product and Service Product and Service [Axis] Non-union pension settlement charges Pension Settlement Charge Pension Settlement Charge. Retirement Plan Tax Status Retirement Plan Tax Status [Axis] Wages, vacations and employee benefits Employee-related Liabilities, Current Employee-related Liabilities, Current, Total Leases Lessee, Operating Leases [Text Block] Operating Lease, Weighted Average Remaining Lease Term Weighted-average remaining lease term - operating leases (years) Total Liabilities and Shareholders’ Deficit Liabilities and Equity Pension Assets for Plan Benefits, Defined Benefit Plan Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Earnings Per Share [Line Items] Earnings Per Share [Line Items] Earnings per share. Salaries, wages and employee benefits Labor and Related Expense Total current liabilities Liabilities, Current Debt-related amortization Debt Related Amortization Debt related amortization. 2026 Lessee, Operating Lease, Liability, to be Paid, Year Three Tranche B Tranche B [Member] Tranche B. Interest expense Interest Expense Interest Expense, Total Short-term cost Short-Term Lease, Cost 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] Preferred stock, shares authorized Preferred Stock, Shares Authorized Long-term debt, fair value Long-Term Debt, Fair Value Claims and insurance accruals Claims And Insurance Accruals Current Claims And Insurance Accruals Current Operating Lease, Weighted Average Discount Rate, Percent Weighted-average discount rate - operating leases Variable Rate Variable Rate [Axis] Entity Small Business Entity Small Business Cash and Cash Equivalents and Restricted Amounts Held in Escrow, Beginning of Period Cash and Cash Equivalents and Restricted Amounts Held in Escrow, End of Period Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Total Premium (Discount), Excluding Current Maturities Debt Instrument Unamortized Discount Premium Net Noncurrent Maturities Debt instrument, unamortized discount (premium), net, noncurrent maturities. Total current assets Assets, Current 2023 - remaining portion Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year Other operating liabilities Increase (Decrease) in Other Operating Liabilities Increase (Decrease) in Other Operating Liabilities, Total Average Common Shares Outstanding - Basic Weighted Average Number of Shares Outstanding, Basic Weighted Average Number of Shares Outstanding, Basic, Total Basic weighted average shares outstanding City Area Code City Area Code Schedule of Outstanding Debt Schedule of Debt [Table Text Block] Description of Business Business Description and Basis of Presentation [Text Block] Document Period End Date Document Period End Date Qualified and Nonqualified Qualified And Non Qualified [Member] Qualified and non qualified. Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Total net periodic pension expense (benefit) Total Assets Assets Second A&R CDA Second A R C D A [Member] Second A&R CDA. Settlement adjustment Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment, Total Settlement adjustment Book Value, Excluding Current Maturities Long-term debt, less current portion Long-Term Debt, Excluding Current Maturities Loss Per Share - Diluted Earnings Per Share, Diluted Earnings Per Share, Diluted, Total Diluted earnings (loss) per share Retirement Plan Type Retirement Plan Type [Axis] Schedule Of Entity Wide Information Revenue From External Customers By Products And Services [Table] Revenue from External Customers by Products and Services [Table] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Operating Revenue Revenue from Contract with Customer, Including Assessed Tax Revenue Document Fiscal Period Focus Document Fiscal Period Focus Accounts receivable Increase (Decrease) in Accounts Receivable Accounts receivable Defined Benefit Pension Plans Pension Plan [Member] Preferred Stock, Value, Issued Preferred Stock, Value, Issued, Total Preferred Stock, Value, Issued, Beginning Balance Preferred Stock, Value, Issued, Ending Balance Cumulative preferred stock, $1 par value per share - authorized 5,000,000 Shares Equity-based compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition APIC, Share-based Payment Arrangement, Increase for Cost Recognition, Total Dilutive securities for the period Unvested shares and stock units Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Incremental Common Shares Attributable to Share-based Payment Arrangements, Total Present value of lease liabilities Operating Lease, Liability Total lease liabilities Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Lease payments Operating And Finance Lease Payments Operating And Finance Lease, Payments Lease payments Statement of Financial Position [Abstract] Entity File Number Entity File Number Statement of Cash Flows [Abstract] Employee Benefits Retirement Benefits [Text Block] Statement of Stockholders' Equity [Abstract] Summary of Lease Cost Lease, Cost [Table Text Block] Anti-Dilutive Unvested Shares and Options Antidilutive Options And Shares [Member] Antidilutive options and shares. Long-term Debt, Type Long-Term Debt, Type [Axis] Deferred Income Tax Expense (Benefit) Deferred Income Tax Expense (Benefit), Total Deferred income taxes, net Par Value, Current Maturities Debt Instrument Gross Current Maturities Debt instrument, gross, current maturities. Amortization of prior net losses Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax Antidilutive Securities Antidilutive Securities [Axis] Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Thereafter Long Term Debt Maturities Repayments Of Principal After Year Four Long term debt maturities repayments of principal after year four. Dilutive weighted average shares outstanding Average Common Shares Outstanding - Diluted Weighted Average Number of Shares Outstanding, Diluted Dilutive weighted average shares outstanding Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Portion at Fair Value Measurement [Member] [Default] Portion at Fair Value Measurement [Member] Current Fiscal Year End Date Current Fiscal Year End Date Commitment Fee, Excluding Current Maturities Debt Instrument Commitment Fee Non Current Debt instrument commitment fee non current. Other assets Other Assets, Noncurrent Other Assets, Noncurrent, Total Entity Address, Address Line One Entity Address, Address Line One Repayment of long-term debt Repayments of Long-Term Debt Repayments of Long-term Debt, Total Supplemental Cash Flow Information: Supplemental Cash Flow Information [Abstract] Summary of Other Information Summary of other information Summary of other information Commitment Fee Debt Instrument Commitment Fee Debt instrument commitment fee. Cash, cash equivalents and managed accessibility. Cash Cash Equivalents And Managed Accessibility Cash, cash equivalents and managed accessibility Total cash and cash equivalents and Managed Accessibility Income tax benefit Income Tax Expense (Benefit) Income Tax Expense (Benefit), Total Summary of Assets, Liabilities and Other Information Lessee Assets, Liabilities and Other Information [Table Text Block] Lessee assets, liabilities and other information. Other current and accrued liabilities Other Accrued Liabilities, Current Acquisition of property and equipment Payments to Acquire Property, Plant, and Equipment Payments to Acquire Property, Plant, and Equipment, Total Acquisition of property and equipment Book Value Reported Value Measurement [Member] Total operating expenses Costs and Expenses Amortization of prior net service credit Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Amortization of prior net service credit Operating Income (Loss) Operating Income (Loss) Capital surplus Additional Paid in Capital, Common Stock Additional Paid in Capital, Common Stock, Beginning Balance Additional Paid in Capital, Common Stock, Ending Balance Entity Filer Category Entity Filer Category Other Liabilities: Liabilities, Noncurrent [Abstract] Entity Current Reporting Status Entity Current Reporting Status ABL Facility Line of Credit [Member] Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Amortization of Prior Service Cost (Credit), Statement of Income or Comprehensive Income [Extensible Enumeration] Total shareholders’ deficit Beginning balance Ending balance Stockholders' Equity Attributable to Parent Other accrued taxes Other Accrued Tax Current Other Accrued Tax Current. Accumulated Other Comprehensive Loss AOCI Attributable to Parent [Member] 2025 Long-Term Debt, Maturity, Year Two Entity Tax Identification Number Entity Tax Identification Number Schedule of Costs of Retirement Plans Schedule of Costs of Retirement Plans [Table Text Block] Common stock, $0.01 par value per share - authorized 95,000,000 shares, issued 51,955,000 and 51,601,000 shares, respectively Common Stock, Value, Issued Common Stock, Value, Issued, Total Common Stock, Value, Issued, Beginning Balance Common Stock, Value, Issued, Ending Balance Accumulated deficit Retained Earnings (Accumulated Deficit) Retained Earnings (Accumulated Deficit), Total Retained Earnings (Accumulated Deficit), Beginning Balance Retained Earnings (Accumulated Deficit), Ending Balance Equity Components Equity Components [Axis] Floor interest rate Debt Instrument Floor Interest Rate Debt instrument, floor interest rate. Leases [Abstract] Unsecured Second A&R CDA Unsecured Second A R C D [Member] Unsecured second A&R CD. Entity Emerging Growth Company Entity Emerging Growth Company Operating Expenses: Operating Expenses [Abstract] Property and Equipment: Property, Plant and Equipment, Net [Abstract] Interest cost Defined Benefit Plan, Interest Cost Retirement Plan Type Retirement Plan Type [Domain] Revenue Disaggregation Revenue [Policy Text Block] Amortization of prior service credit Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, after Tax Retirement Benefits [Abstract] Document Transition Report Document Transition Report Secured Second A&R CDA Secured Second A R C D A [Member] Secured Second A&R CDA [Member] 2026 Long-Term Debt, Maturity, Year Three Nonoperating expenses, net Nonoperating Income (Expense) Nonoperating Income (Expense), Total Depreciation and amortization Depreciation, Depletion and Amortization Depreciation, Depletion and Amortization, Total Commitments, Contingencies and Uncertainties Commitments and Contingencies Disclosure [Text Block] Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated Other Comprehensive Income (Loss), Net of Tax, Total Accounts receivable, net Accounts Receivable, after Allowance for Credit Loss, Current Accounts Receivable, after Allowance for Credit Loss, Current, Total Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Other comprehensive income (loss), net of tax Other Comprehensive Income (Loss), Net of Tax Other Comprehensive Income (Loss), Net of Tax, Total Net loss Net Loss Net Income (Loss) Attributable to Parent Current operating lease liabilities Operating Lease, Liability, Current Lease financing obligations Lease Financing Obligations [Member] Lease financing obligations. Summary of Lease Term and Discount Rate Lessee Lease Term And Discount Rate Table [Text Block] Lessee, Lease Term And Discount Rate [Table Text Block] Capital Surplus Additional Paid-in Capital [Member] Payments for tax withheld on equity-based compensation Payment, Tax Withholding, Share-Based Payment Arrangement Schedule of Maturities of Long-term Debt Schedule of Maturities of Long-Term Debt [Table Text Block] Entity Registrant Name Entity Registrant Name Foreign currency translation, net of tax Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Total Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Cash and Cash Equivalents, at Carrying Value, Total Cash and Cash Equivalents, at Carrying Value, Beginning Balance Cash and Cash Equivalents, at Carrying Value, Ending Balance Loss Per Share Earnings Per Share [Text Block] Equity-based compensation and employee benefits expense Share-Based Payment Arrangement, Noncash Expense Share-based Payment Arrangement, Noncash Expense, Total Statement of Comprehensive Income [Abstract] Earnings Per Share [Table] Earnings Per Share [Table] Earnings per share. Net property and equipment Property, Plant and Equipment, Net Property, Plant and Equipment, Net, Beginning Balance Property, Plant and Equipment, Net, Ending Balance Statement [Line Items] Statement [Line Items] Title of 12(b) Security Title of 12(b) Security Common Stock Common Stock [Member] Net actuarial loss Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax Operating Activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Equity Component Equity Component [Domain] Loss before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Fuel, operating expenses and supplies Cost, Direct Material Entity Address, State or Province Entity Address, State or Province 2027 Lessee, Operating Lease, Liability, to be Paid, Year Four Claims and other liabilities Claims And Insurance Accruals Noncurrent Claims and insurance accruals noncurrent. Net Increase (Decrease) In Cash and Cash Equivalents and Restricted Amounts Held in Escrow Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Comprehensive Loss Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Document Type Document Type Interest paid Interest Paid, Excluding Capitalized Interest, Operating Activities Amortization of prior net pension loss Defined Benefit Plan, Amortization of Gain (Loss) Amortization of prior net losses Entity Shell Company Entity Shell Company Security Exchange Name Security Exchange Name Net cash provided by (used in) operating activities Net Cash Provided by (Used in) Operating Activities Net cash provided by (used in) operating activities Effective Interest Rate Debt Instrument, Interest Rate, Effective Percentage Commitments and Contingencies Disclosure [Abstract] LTL revenue L T L Revenue [Member] LTL Revenue [Member] Operating Lease, Cost Lease amortization and accretion expense Operating lease cost Summary of Remaining Maturities of Lease Liabilities Lessee, Operating Lease, Liability, Maturity [Table Text Block] Par Value, Excluding Current Maturities Debt Instrument Face Amount Excluding Current Maturities Debt instrument, face amount, excluding current maturities. Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] Newly Adopted Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] Schedule Of Defined Benefit Plans Disclosures [Table] Schedule of Defined Benefit Plans Disclosures [Table] Debt and Financing Debt Disclosure [Text Block] Investing Activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Restricted amounts held in escrow Restricted Cash and Cash Equivalents, Current Restricted Cash and Cash Equivalents, Current, Total Commitments and contingencies Commitments and Contingencies Common stock, shares issued Common Stock, Shares, Issued Common Stock, Shares, Issued, Total Issuance of common stock Tranche A Tranche A [Member] Tranche A. Variable Rate Variable Rate [Domain] After 2027 Lessee Operating Lease Liability Payments Due After Year Four Lessee operating lease liability payments due after year four. Debt Instrument Debt Instrument [Axis] Shareholders’ Deficit: Stockholders' Equity Attributable to Parent [Abstract] Treasury Stock, At Cost Treasury Stock [Member] Entity Address, Address Line Two Other Noncash Income (Expense) Other non-cash items, net Other non-cash items, net Other non-cash items, net 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. Other, net Other Nonoperating Income (Expense) Other Nonoperating Income (Expense), Total Book Value, Current Maturities Current maturities of long-term debt Long-Term Debt, Current Maturities Long-term Debt, Current Maturities, Total Depreciation and amortization Cost, Depreciation and Amortization Cost, Depreciation and Amortization, Total Nonoperating Expenses: Nonoperating Income (Expense) [Abstract] 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] Total lease payments Lessee, Operating Lease, Liability, to be Paid Other revenue Other Revenue [Member] Other Revenue [Member] Entity Central Index Key Entity Central Index Key Accounting Policies [Abstract] Less – accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Total Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Beginning Balance Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Ending Balance Secured and unsecured second A&R CDA. Secured and Unsecured Second A&R CDA [Member] Organization, Consolidation and Presentation of Financial Statements [Abstract] Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] Non Union Pension And Postretirement Benefits Non Union Pension And Postretirement Benefits Non-union pension and postretirement benefits Debt Issuance Costs Debt Issuance Costs, Net Debt Issuance Costs, Net, Total Total lease cost Lease, Cost Leased assets obtained in exchange for new operating lease liabilities Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Accumulated Deficit Retained Earnings [Member] Discount Debt Instrument, Unamortized Discount (Premium), Net Debt Instrument, Unamortized Discount (Premium), Net, Total Cost Property, Plant and Equipment, Gross Property, Plant and Equipment, Gross, Total Property, Plant and Equipment, Gross, Beginning Balance Property, Plant and Equipment, Gross, Ending Balance Entity Interactive Data Current Entity Interactive Data Current Debt Issuance Costs, Noncurrent Debt Issuance Costs, Noncurrent, Net Debt Issuance Costs, Noncurrent, Net, Total 2024 Lessee, Operating Lease, Liability, to be Paid, Year One Local Phone Number Local Phone Number Debt Disclosure [Abstract] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] UST Loan U S Treasury Loan [Member] US treasury loan. 2024 Long-Term Debt, Maturity, Year One Book Value Long-Term Debt Other operating expenses Other Cost and Expense, Operating Other Cost and Expense, Operating, Total Liability, Defined Benefit Plan, Noncurrent, Total Liability, Defined Benefit Plan, Noncurrent Pension and postretirement Debt Instrument, Name Debt Instrument, Name [Domain] Document Fiscal Year Focus Document Fiscal Year Focus 2025 Lessee, Operating Lease, Liability, to be Paid, Year Two Loss Per Share - Basic Earnings Per Share, Basic Earnings Per Share, Basic, Total Basic earnings (loss) per share Assets Assets [Abstract] Prepaid expenses and other Prepaid Expense and Other Assets, Current Treasury stock, at cost Treasury Stock, Value Treasury Stock, Value, Total Treasury Stock, Value, Beginning Balance Treasury Stock, Value, Ending Balance Debt due Debt, Current Debt, Current, Total Liabilities and Shareholders’ Deficit Liabilities and Equity [Abstract] Retirement Plan Tax Status Retirement Plan Tax Status [Domain] Antidilutive Securities, Name Antidilutive Securities, Name [Domain] Accounts payable Increase (Decrease) in Accounts Payable, Trade Net loss Net income (loss) Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net loss Current Assets: Assets, Current [Abstract] A&R CDA [Member] A&R CDA member Changes in assets and liabilities, net: Increase (Decrease) in Operating Capital [Abstract] Cover [Abstract] Product and Service Product and Service [Domain] Measurement Basis Measurement Basis [Axis] Current Liabilities: Liabilities, Current [Abstract] Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Expected Return (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Net cash provided by (used in) investing activities Net Cash Provided by (Used in) Investing Activities Use of Estimates, Policy [Policy Text Block] Use of Estimates Basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate 2023 - remaining portion Long-Term Debt, Maturity, Remainder of Fiscal Year Term Loan Term Loan [Member] Term loan. Total Par Value Long-Term Debt, Gross Common stock, shares authorized Common Stock, Shares Authorized Trading Symbol Trading Symbol Revenue from External Customer [Line Items] Revenue from External Customer [Line Items] Proceeds from disposal of property and equipment Proceeds from Sale of Property, Plant, and Equipment Proceeds from Sale of Property, Plant, and Equipment, Total Accounts payable Accounts Payable, Current Accounts Payable, Current, Total Other operating assets Increase (Decrease) in Other Operating Assets Increase (Decrease) in Other Operating Assets, Total Other operating assets Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Gains on property disposals, net Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property (Gains) losses on property disposals, net Variable lease cost Variable Lease, Cost 2014 ABL Facility Credit Agreement A2014 A B L Facility Credit Agreement [Member] 2014 ABL facility credit agreement. Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Fair Value Estimate of Fair Value Measurement [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Long-term Debt, Type Long-Term Debt, Type [Domain] Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Anti-dilutive unvested shares, options and stock units Expected return on plan assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets