3.23.1 html 131 289 1 false 49 0 false 7 false false R1.htm 00090 - Document - Document And Entity Information Sheet http://www.usxpress.com/role/DocumentDocumentAndEntityInformation Document And Entity Information Cover 1 false false R2.htm 00100 - Statement - Unaudited Condensed Consolidated Balance Sheets Sheet http://www.usxpress.com/role/StatementUnauditedCondensedConsolidatedBalanceSheets Unaudited Condensed Consolidated Balance Sheets Statements 2 false false R3.htm 00105 - Statement - Unaudited Condensed Consolidated Balance Sheets (Parentheticals) Sheet http://www.usxpress.com/role/StatementUnauditedCondensedConsolidatedBalanceSheetsParentheticals Unaudited Condensed Consolidated Balance Sheets (Parentheticals) Statements 3 false false R4.htm 00200 - Statement - Unaudited Condensed Consolidated Statements of Comprehensive Income (Loss) Sheet http://www.usxpress.com/role/StatementUnauditedCondensedConsolidatedStatementsOfComprehensiveIncomeLoss Unaudited Condensed Consolidated Statements of Comprehensive Income (Loss) Statements 4 false false R5.htm 00300 - Statement - Unaudited Condensed Consolidated Statements of Cash Flows Sheet http://www.usxpress.com/role/StatementUnauditedCondensedConsolidatedStatementsOfCashFlows Unaudited Condensed Consolidated Statements of Cash Flows Statements 5 false false R6.htm 00400 - Statement - Unaudited Condensed Consolidated Statement of Stockholders' Equity Sheet http://www.usxpress.com/role/StatementUnauditedCondensedConsolidatedStatementOfStockholdersEquity Unaudited Condensed Consolidated Statement of Stockholders' Equity Statements 6 false false R7.htm 10101 - Disclosure - Organization and Operations Sheet http://www.usxpress.com/role/DisclosureOrganizationAndOperations Organization and Operations Notes 7 false false R8.htm 10201 - Disclosure - Summary of Significant Accounting Policies Sheet http://www.usxpress.com/role/DisclosureSummaryOfSignificantAccountingPolicies Summary of Significant Accounting Policies Notes 8 false false R9.htm 10301 - Disclosure - Income Taxes Sheet http://www.usxpress.com/role/DisclosureIncomeTaxes Income Taxes Notes 9 false false R10.htm 10401 - Disclosure - Investments Sheet http://www.usxpress.com/role/DisclosureInvestments Investments Notes 10 false false R11.htm 10501 - Disclosure - Long-Term Debt Sheet http://www.usxpress.com/role/DisclosureLongTermDebt Long-Term Debt Notes 11 false false R12.htm 10601 - Disclosure - Leases Sheet http://www.usxpress.com/role/DisclosureLeases Leases Notes 12 false false R13.htm 10701 - Disclosure - Commitments and Contingencies Sheet http://www.usxpress.com/role/DisclosureCommitmentsAndContingencies Commitments and Contingencies Notes 13 false false R14.htm 10801 - Disclosure - Share-based Compensation Sheet http://www.usxpress.com/role/DisclosureShareBasedCompensation Share-based Compensation Notes 14 false false R15.htm 10901 - Disclosure - Earnings per Share Sheet http://www.usxpress.com/role/DisclosureEarningsPerShare Earnings per Share Notes 15 false false R16.htm 11001 - Disclosure - Segment Information Sheet http://www.usxpress.com/role/DisclosureSegmentInformation Segment Information Notes 16 false false R17.htm 11101 - Disclosure - Proposed Merger Sheet http://www.usxpress.com/role/DisclosureProposedMerger Proposed Merger Notes 17 false false R18.htm 20202 - Disclosure - Summary of Significant Accounting Policies (Policies) Sheet http://www.usxpress.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies Summary of Significant Accounting Policies (Policies) Policies http://www.usxpress.com/role/DisclosureSummaryOfSignificantAccountingPolicies 18 false false R19.htm 30303 - Disclosure - Income Taxes (Tables) Sheet http://www.usxpress.com/role/DisclosureIncomeTaxesTables Income Taxes (Tables) Tables http://www.usxpress.com/role/DisclosureIncomeTaxes 19 false false R20.htm 30503 - Disclosure - Long-Term Debt (Tables) Sheet http://www.usxpress.com/role/DisclosureLongTermDebtTables Long-Term Debt (Tables) Tables http://www.usxpress.com/role/DisclosureLongTermDebt 20 false false R21.htm 30603 - Disclosure - Leases (Tables) Sheet http://www.usxpress.com/role/DisclosureLeasesTables Leases (Tables) Tables http://www.usxpress.com/role/DisclosureLeases 21 false false R22.htm 30803 - Disclosure - Share-based Compensation (Tables) Sheet http://www.usxpress.com/role/DisclosureShareBasedCompensationTables Share-based Compensation (Tables) Tables http://www.usxpress.com/role/DisclosureShareBasedCompensation 22 false false R23.htm 30903 - Disclosure - Earnings per Share (Tables) Sheet http://www.usxpress.com/role/DisclosureEarningsPerShareTables Earnings per Share (Tables) Tables http://www.usxpress.com/role/DisclosureEarningsPerShare 23 false false R24.htm 31003 - Disclosure - Segment Information (Tables) Sheet http://www.usxpress.com/role/DisclosureSegmentInformationTables Segment Information (Tables) Tables http://www.usxpress.com/role/DisclosureSegmentInformation 24 false false R25.htm 40101 - Disclosure - Organization and Operations (Details) Sheet http://www.usxpress.com/role/DisclosureOrganizationAndOperationsDetails Organization and Operations (Details) Details http://www.usxpress.com/role/DisclosureOrganizationAndOperations 25 false false R26.htm 40201 - Disclosure - Summary of Significant Accounting Policies - Intangibles, debt, revenue (Details) Sheet http://www.usxpress.com/role/DisclosureSummaryOfSignificantAccountingPoliciesIntangiblesDebtRevenueDetails Summary of Significant Accounting Policies - Intangibles, debt, revenue (Details) Details 26 false false R27.htm 40301 - Disclosure - Income Taxes - Components of Earnings (Loss) Before Income Taxes (Details) Sheet http://www.usxpress.com/role/DisclosureIncomeTaxesComponentsOfEarningsLossBeforeIncomeTaxesDetails Income Taxes - Components of Earnings (Loss) Before Income Taxes (Details) Details 27 false false R28.htm 40401 - Disclosure - Investments (Details) Sheet http://www.usxpress.com/role/DisclosureInvestmentsDetails Investments (Details) Details http://www.usxpress.com/role/DisclosureInvestments 28 false false R29.htm 40501 - Disclosure - Long-Term Debt - Components (Details) Sheet http://www.usxpress.com/role/DisclosureLongTermDebtComponentsDetails Long-Term Debt - Components (Details) Details 29 false false R30.htm 40502 - Disclosure - Long-Term Debt - Credit Facilities (Details) Sheet http://www.usxpress.com/role/DisclosureLongTermDebtCreditFacilitiesDetails Long-Term Debt - Credit Facilities (Details) Details 30 false false R31.htm 40601 - Disclosure - Leases - Assets and Liabilities (Details) Sheet http://www.usxpress.com/role/DisclosureLeasesAssetsAndLiabilitiesDetails Leases - Assets and Liabilities (Details) Details 31 false false R32.htm 40602 - Disclosure - Leases - Cost (Details) Sheet http://www.usxpress.com/role/DisclosureLeasesCostDetails Leases - Cost (Details) Details 32 false false R33.htm 40603 - Disclosure - Leases - Cash Flow Information (Details) Sheet http://www.usxpress.com/role/DisclosureLeasesCashFlowInformationDetails Leases - Cash Flow Information (Details) Details 33 false false R34.htm 40604 - Disclosure - Leases - Lease Term and Discount Rate (Details) Sheet http://www.usxpress.com/role/DisclosureLeasesLeaseTermAndDiscountRateDetails Leases - Lease Term and Discount Rate (Details) Details 34 false false R35.htm 40605 - Disclosure - Leases - Futures maturities of Lease Liabilities (Details) Sheet http://www.usxpress.com/role/DisclosureLeasesFuturesMaturitiesOfLeaseLiabilitiesDetails Leases - Futures maturities of Lease Liabilities (Details) Details 35 false false R36.htm 40606 - Disclosure - Leases - Sale leaseback (Details) Sheet http://www.usxpress.com/role/DisclosureLeasesSaleLeasebackDetails Leases - Sale leaseback (Details) Details 36 false false R37.htm 40701 - Disclosure - Commitments and Contingencies (Details) Sheet http://www.usxpress.com/role/DisclosureCommitmentsAndContingenciesDetails Commitments and Contingencies (Details) Details http://www.usxpress.com/role/DisclosureCommitmentsAndContingencies 37 false false R38.htm 40801 - Disclosure - Share-based Compensation - Omnibus Incentive Plan (Details) Sheet http://www.usxpress.com/role/DisclosureShareBasedCompensationOmnibusIncentivePlanDetails Share-based Compensation - Omnibus Incentive Plan (Details) Details 38 false false R39.htm 40802 - Disclosure - Share-based Compensation - Omnibus Plan Other Information (Details) Sheet http://www.usxpress.com/role/DisclosureShareBasedCompensationOmnibusPlanOtherInformationDetails Share-based Compensation - Omnibus Plan Other Information (Details) Details 39 false false R40.htm 40803 - Disclosure - Share-based Compensation - Stock Option Activity (Details) Sheet http://www.usxpress.com/role/DisclosureShareBasedCompensationStockOptionActivityDetails Share-based Compensation - Stock Option Activity (Details) Details 40 false false R41.htm 40804 - Disclosure - Share-based Compensation - Options Information and Valuation (Details) Sheet http://www.usxpress.com/role/DisclosureShareBasedCompensationOptionsInformationAndValuationDetails Share-based Compensation - Options Information and Valuation (Details) Details 41 false false R42.htm 40805 - Disclosure - Share-based Compensation - Restricted Stock Units (Details) Sheet http://www.usxpress.com/role/DisclosureShareBasedCompensationRestrictedStockUnitsDetails Share-based Compensation - Restricted Stock Units (Details) Details 42 false false R43.htm 40806 - Disclosure - Share-based Compensation - ESPP (Details) Sheet http://www.usxpress.com/role/DisclosureShareBasedCompensationEsppDetails Share-based Compensation - ESPP (Details) Details 43 false false R44.htm 40901 - Disclosure - Earnings per Share (Details) Sheet http://www.usxpress.com/role/DisclosureEarningsPerShareDetails Earnings per Share (Details) Details http://www.usxpress.com/role/DisclosureEarningsPerShareTables 44 false false R45.htm 40902 - Disclosure - Earnings per Share - Basic and Diluted Per Share Calculations (Details) Sheet http://www.usxpress.com/role/DisclosureEarningsPerShareBasicAndDilutedPerShareCalculationsDetails Earnings per Share - Basic and Diluted Per Share Calculations (Details) Details 45 false false R46.htm 41001 - Disclosure - Segment Information (Details) Sheet http://www.usxpress.com/role/DisclosureSegmentInformationDetails Segment Information (Details) Details http://www.usxpress.com/role/DisclosureSegmentInformationTables 46 false false R47.htm 41101 - Disclosure - Proposed Merger (Details) Sheet http://www.usxpress.com/role/DisclosureProposedMergerDetails Proposed Merger (Details) Details http://www.usxpress.com/role/DisclosureProposedMerger 47 false false All Reports Book All Reports [ix-0514-Hidden-Fact-Eligible-For-Transform] WARN: 10 fact(s) appearing in ix:hidden were eligible for transformation: dei:EntityRegistrantName, us-gaap:CommonStockSharesIssued, us-gaap:CommonStockSharesOutstanding, us-gaap:LesseeFinanceLeaseTermOfContract1, us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1, usx:BusinessCombinationRolloverSharesPercent - usx-20230331x10q.htm 9 [ix-0514-Hidden-Fact-Not-Referenced] WARN: 3 fact(s) appearing in ix:hidden were not referenced by any -sec-ix-hidden style property: us-gaap:FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList, us-gaap:FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList, us-gaap:FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList - usx-20230331x10q.htm 9 usx-20230331x10q.htm usx-20230331.xsd usx-20230331_cal.xml usx-20230331_def.xml usx-20230331_lab.xml usx-20230331_pre.xml usx-20230331xex31d1.htm usx-20230331xex31d2.htm usx-20230331xex32d1.htm usx-20230331xex32d2.htm usx-20230331x10q001.jpg http://fasb.org/us-gaap/2022 http://xbrl.sec.gov/dei/2022 true true