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Senior Secured Promissory Note [Member] Deferred Income Tax Assets, Net Deferred income taxes Total Inventory, Net Other Comprehensive Income (Loss), Net of Tax [Abstract] Other comprehensive income (loss): Marketable Securities [Abstract] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark Change in Accounting Estimate [Table] Schedule Of Change In Accounting Estimate [Table] Accrued Liabilities, Current Accrued expenses and other current liabilities Total Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Long-Term Debt, Current Maturities Current portion of long-term debt Less current portion of long-term debt Long-Term Debt, Current Maturities, Total Net cash proceeds from equity cure to compliance with financial covenant Net Cash Proceeds From Equity Cure To Compliance with Financial Covenant Net cash proceeds from equity cure to compliance with financial covenant. Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Accumulated other comprehensive (loss): Dividends, Common Stock Dividends, Common Stock, Total Dividends Document Type Document Type Trailers [Member] Trailers. Automotive industry. Automotive Industry [Member] Automotive Industry [Member] Lessee operating lease liability payments due after year four. Lessee Operating Lease Liability Payments Due After Year Four Thereafter Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Cash flows from operating activities: Dividends Payable [Table] Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration] Liabilities and Equity [Abstract] Liabilities and Stockholders' Equity Lessee, Lease, Description [Line Items] Lessee Lease Description [Line Items] Transportation services term. Transportation Services Term Transportation services term Subsequent Event [Member] Subsequent Event [Member] Operating Income (Loss) Income from operations Income from operations Summary of Activity in Allowance For Credit Losses Financing Receivable, Allowance for Credit Loss [Table Text Block] Revenue recognition. Revenue Recognition [Text Block] Revenue Recognition Segment Reporting [Table] Schedule Of Segment Reporting Information By Segment [Table] Vesting period three. Vesting Period Three [Member] Vesting on January 10, 2027 [Member] Administrative support services. Administrative Support Services [Member] Administrative support services [Member] Securities Act File Number Entity File Number Equipment [Member] Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Schedule of Future Minimum Lease Payments Under Operating Leases Credit Tenant Lease Financing Transaction [Member] Credit tenant lease financing transaction. Credit Tenant Lease Financing Transaction [Member] Location, Statement of Income, Balance [Axis] Dividends Payable, Date of Record Dividends payable, recorded date Retained Earnings [Member] Retained earnings [Member] Entity Registrant Name Entity Registrant Name Other receivables Other Receivables Except Due From Affiliates Other receivables except due from affiliates. Accounting Policies [Abstract] Lease Disclosure [Table] Lease Disclosure [Table] Lease Disclosure [Table] Proceeds from Issuance of Debt Proceeds from borrowing - term debt Insurance. Insurance [Member] Insurance [Member] Newark Facility [Member] Newark facility. Intersegment Eliminations [Member] Entity Address, Address Line One Entity Address, Address Line One Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block] Accrued Expenses and Other Current Liabilities Line of Credit Facility, Expiration Date Credit facility, expiration date Workforce Subject to Collective-Bargaining Arrangements [Member] Workforce Subject to Collective Bargaining Arrangements [Member] Assets, Current Total current assets Fair Value, Recurring and Nonrecurring [Table] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Segments [Axis] Segments Proceeds from Divestiture of Businesses Proceeds from sale of business Supplemental Cash Flow Information [Abstract] Supplemental cash flow information: Related Party Transactions Disclosure [Text Block] Transactions with Affiliates Entity Small Business Entity Small Business Long-Term Debt, Excluding Current Maturities Long-term debt, net of current portion Total long-term debt, net of current portion Long-Term Debt, Excluding Current Maturities, Total Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Weighted Average Grant Date Fair Value, Forfeited Long-Term Debt, Type [Axis] Long-Term Debt, Type Accounts Receivable, after Allowance for Credit Loss, Current Accounts Receivable, after Allowance for Credit Loss, Current, Total Accounts receivable - net of allowance for credit losses of $4,582 and $3,908, respectively Consolidation Items [Domain] Consolidation Items Earnings Per Share [Abstract] Earnings per common share: Accrued contract costs Accrued contract costs Equity securities FvNi accumulated gross unrealized gain loss. Equity Securities Fv Ni Accumulated Gross Unrealized Gain Loss Unrealized gain Net unrealized gains Lessee, Operating Lease, Liability, to be Paid, Year Four 2030 Contract with Customer, Asset, after Allowance for Credit Loss, Noncurrent Contract with Customer, Asset, after Allowance for Credit Loss, Noncurrent, Total Contract receivable, net of current portion Subsequent Event Type [Axis] Subsequent Event Type Number of equity required for fixed charge coverage ratio Number Of Equity Required For Fixed Charge Coverage Ratio Number of equity required for fixed charge coverage ratio. Product and Service [Domain] Product and Service Accounts Receivable, Allowance for Credit Loss, Current Allowance for credit losses Balance at end of period Balance at beginning of year Measurement Frequency [Axis] Measurement Frequency Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Cash flows from financing activities: Liabilities, Noncurrent Total long-term liabilities Consolidated Entities [Axis] Lease Disclosure [Line Items] Lease Disclosure [Line Items] Lease Disclosure [Line Items] Share based compensation arrangement by share based payment award equity instruments other than options expected to vest number. Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Expected To Vest Number Number of shares expected to vest Entity Tax Identification Number Entity Tax Identification Number Driver escrow deposits held by the Company. Escrow Liability Driver escrow liabilities Treasury stock, shares Treasury Stock, Common, Shares Shares held in treasury O 2026 Q3 Dividends [Member] O 2026 Q3 Dividends. Derivative Instrument Derivative Instrument [Axis] Equity Component [Domain] Equity Component Entity Address, City or Town Entity Address, City or Town Unionized Employees Concentration Risk [Member] Unionized Employees Concentration Risk [Member] Dividends Unpaid Dividends unpaid. Dividends unpaid Vesting period one. Vesting Period One [Member] Vesting on January 10, 2024 [Member] Segments [Domain] Segments Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Concentration Risk Type [Axis] Concentration Risk Type Non Cash Receipt From Sale Of Real Property Fair Value Non cash receipt from sale of real property fair value. Non cash receipt from sale of real property fair value Schedule of Debt [Table Text Block] Details of Debt Marketable Securities [Table Text Block] Marketable Securities Dividends Payable [Line Items] Write-off of debt issuance costs Deferred Debt Issuance Cost, Writeoff Increase (Decrease) in Other Noncurrent Liabilities Other long-term liabilities Insurance and claims. 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Real Estate Financing [Member] Real Estate Facility [Member] Concentration Risk [Table] Concentration Risk [Table] Assets, Current [Abstract] Current assets: Debt Issuance Costs, Net Unamortized debt issuance costs Debt Issuance Costs, Net, Total Liabilities, Fair Value Disclosure Total Carrying amount of accrued known and estimated losses incurred as of the balance sheet date for which a claim has been made or is probable of being asserted. 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Proceeds From Sale Of Equity Securities Sale proceeds Sale of marketable equity securities Related Party [Member] Foreign Currency Contract, Asset, Fair Value Disclosure Interest rate swap Operating Lease, Liability, Noncurrent Operating lease liabilities, net of current portion Lessee, Operating Lease, Liability, to be Paid Total required lease payments Line of Credit Facility, Frequency of Payments Frequency of installments Treasury Stock, Value Treasury Stock, Value, Total Aggregate cost of treasury stock Treasury stock, at cost; 8,923 and 6,079 shares Additional Paid in Capital, Common Stock Paid-in capital Security Exchange Name Security Exchange Name Revenues Revenues, Total Related and Nonrelated Parties [Axis] Related Party Entity Address, State or Province Entity Address, State or Province Related Party Transaction, Amounts of Transaction Cost incurred for services provided by CenTra and affiliates Gain on marketable equity securities Marketable Security, Gain (Loss) Marketable Securities, Gain (Loss), Excluding Other-than-temporary Impairment Loss, Total Operating lease right-of-use asset Operating Lease, Right-of-Use Asset Amendment Flag Amendment Flag Effect of Change in Accounting Estimate, Type [Axis] Change in Accounting Estimate by Type Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Right-of-use assets obtained in exchange for new operating lease liabilities Share-Based Payment Arrangement [Text Block] Stock Based Compensation Concentration Risk, Percentage Percentage of employees concentration Concentration risk percentage Sublease Income Sublease income Debt Instrument [Axis] Debt Instrument Other non-operating income (expense) Other Nonoperating Income (Expense) Other Nonoperating Income (Expense), Total Other non-operating (expense) income Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] SOFR [Member] Contract logistics. Contract Logistics [Member] Contract Logistics [Member] Dedicated Services [Member] Dedicated services. Dedicated services [Member] City Area Code City Area Code Credit Loss [Abstract] Intermodal. Intermodal [Member] Intermodal [Member] Reported Value Measurement [Member] Carrying Value [Member] Useful Life And Salvage Values Of Certain Equipment. Useful Life And Salvage Values Of Certain Equipment [Member] Useful Life and Salvage Values of Certain Equipment [Member] Commitment, contingency and related party transactions. Commitment Contingency And Related Party Transactions [Abstract] Facilities And Related Support. Facilities And Related Support [Member] Facilities and Related Support [Member] Brokerage services. Brokerage Services [Member] Brokerage services [Member] Unrealized Gain (Loss) on Investments [Table Text Block] Schedule of Gross Unrealized Gains and Losses on Marketable Securities Change in Accounting Estimate [Line Items] Change In Accounting Estimate [Line Items] Operating Expenses [Abstract] Operating expenses: Inventory Disclosure [Text Block] Inventories Dividends Payable, Date to be Paid Dividends payable, date to be paid AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax Interest rate swap, net of income taxes of $0 and $96, respectively Realized Gain (Loss) on Investments [Table Text Block] Summary of Net Realized Gains (Losses) on Marketable Securities Other comprehensive income loss unrealized changes in fair value of interest rate swaps tax. Other Comprehensive Income Loss Unrealized Changes In Fair Value Of Interest Rate Swaps Tax Unrealized changes in fair value of interest rate swaps, tax Short-Term Debt, Type [Domain] Short-Term Debt, Type Total current liabilities Liabilities, Current Increase decrease in operating lease liabilities. Increase Decrease In Operating Lease Liabilities Principal reduction in operating lease liabilities Accrued Liabilities for Commissions, Expense and Taxes Commissions, other taxes and other Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation Cash and cash equivalents – end of period Cash and cash equivalents – beginning of period Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations, Total The entire disclosure related to dividends declared during the period. Dividend Disclosure [Text Block] Dividends Variable Lease, Cost Variable lease cost Segment Reporting [Text Block] Segment Reporting Trading Symbol Trading Symbol Real Estate Properties [Domain] Derivative, Contract End Date Derivative maturity date Subsequent Event [Table] Subsequent Event [Table] Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Shares of restricted stock granted Shares, Granted Entity Emerging Growth Company Entity Emerging Growth Company Revenue Recognition [Abstract] Dividends Payable, Date Declared Dividends payable, date declared Additional Paid-in Capital [Member] Paid-in capital [Member] Dividends [Axis] Fair Value Measurement [Domain] Fair Value Measurement Long-Term Debt, Gross Outstanding Debt Payment receivable for specialty development project. Payment Receivable For Specialty Development Project Payment receivable for specialty development project Credit and security agreement. Credit And Security Agreement [Member] Credit and Security Agreement [Member] Other Liabilities, Noncurrent Other long-term liabilities Share-Based Payment Arrangement, Tranche One [Member] 2020 [Member] Portion at Fair Value Measurement [Member] [Default] Portion at Fair Value Measurement [Member] [Default] Payments of Dividends Dividends paid Payments of Dividends, Total Non-cash investing and financing activities: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Cover [Abstract] Truckload services. Truckload Services [Member] Truckload services [Member] Segment Reporting, Other Segment Item, Amount Other segment expenses One Equipment [Member] One Equipment [Member] Equity securities FvNi accumulated gross unrealized gain. Equity Securities Fv Ni Accumulated Gross Unrealized Gain Gross unrealized gains Operating Lease, Weighted Average Remaining Lease Term Weighted-average remaining lease term (in years) Employee service share based compensation non-vested awards compensation cost expected to be recognized in year one. Employee Service Share Based Compensation Non Vested Awards Compensation Cost Expected To Be Recognized In Year One Share based compensation cost is expected to be recognized on a straight-line basis in fiscal 2027 Long-Term Debt, Type [Domain] Long-Term Debt, Type Summary of other lease related information. Summary Of Other Lease Related Information Table [Text Block] Summary of Other Lease Related Information Share-Based Payment Arrangement, Noncash Expense Stock-based compensation Share-Based Payment Arrangement, Noncash Expense, Total Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Fair Value Disclosures [Abstract] Cash and Cash Equivalent Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value, Total Realized gain, net of taxes Equity securities FvNi realized gain loss net of tax. Equity Securities Fv Ni Realized Gain Loss Net Of Tax Payments of Debt Issuance Costs Capitalized financing costs Line of credit facility number of periodic payments. 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Margin Facility [Member] Margin Facility [Member] Increase (Decrease) in Accounts Receivable Trade and other accounts receivable Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization Property, Plant and Equipment, Net, Total Property and equipment - net of accumulated depreciation of $513,095 and $467,488, respectively Value-added services. Value Added Services [Member] Value-added services [Member] UACL credit and security agreement. 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