Document And Entity Information
Expected dividend yield
Note To Financial Statement Details Textual
Significant Accounting Policies
Note 2 - Significant Accounting Policies
us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
Income taxes at the federal statutory rate
us-gaap_OtherReceivablesGrossCurrent
Other accounts receivable
Note 4 - Accounts Receivable
Risk-free interest rate
Note 5 - Inventories
Note 6 - Valuation Accounts
Call Option [Member]
Note 7 - Floor Plan Notes Payable and Lines of Credit
Note 8 - Long-term Debt
Weighted-average stock volatility
Note 10 - Leases
Note 11 - Share Based Compensation and Employee Benefit Plans
Income Tax Disclosure [Text Block]
Note 12 - Earnings Per Share
Note 13 - Income Taxes
us-gaap_GuaranteeObligationsCurrentCarryingValue
Guarantor Obligations, Current Carrying Value
Note 16 - Unaudited Quarterly Financial Data
Note 17 - Segments
Expected stock volatility
Note 18 - Revenue
us-gaap_LiabilitiesCurrent
Total current liabilities
Schedule of Maturities of Long-term Debt [Table Text Block]
Note 19 - Accumulated Other Comprehensive Income
Note 2 - Significant Accounting Policies - Property and Equipment (Details)
Note 2 - Significant Accounting Policies - Fair Value Assumption (Details)
Expected life (Year)
Note 4 - Accounts Receivable - Accounts Receivable (Details)
Note 5 - Inventories - Inventories (Details)
Note 6 - Valuation Accounts - Valuation and Allowance Accounts (Details)
Note 6 - Valuation Accounts - Allowance for Accounts Receivable (Details)
Outstanding non-vested, weighted average remaining contractual life (Year)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value
Note 7 - Floor Plan Notes Payable and Lines of Credit - Assets Pledged as Collateral (Details)
Note 8 - Long-term Debt - Long-term Debt (Details)
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
Note 8 - Long-term Debt - Debt Maturities (Details)
Note 10 - Leases - Lease Cost (Details)
Note 10 - Leases - Maturities of Lease Liabilities (Details)
Note 10 - Leases - Future Minimum Rental Receivable (Details)
Note 10 - Leases - Rental Income (Details)
Parts and Service [Member]
The performance of commercial vehicle repair services and the sale of commercial vehicle parts.
Share-based Payment Arrangement, Option, Activity [Table Text Block]
New and Used Commercial Vehicle [Member]
Represents the information pertaining to new and used commercial vehicle.
Note 11 - Share Based Compensation and Employee Benefit Plans - Stock Option (Details)
Note 11 - Share Based Compensation and Employee Benefit Plans - Non-vested Options (Details)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)
Change in currency translation
Note 11 - Share Based Compensation and Employee Benefit Plans - Non-vested Restricted Stock Awards and RSU's (Details)
rusha_CostOfRevenueLeaseAndRental
Lease and rental
The aggregate cost related to the lease and rental service.
Note 12 - Earnings Per Share - Earnings Per Share Calculation (Details)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue
Vested, weighted average grant date fair value (in dollars per share)
Note 12 - Earnings Per Share - Anti-dilutive Securities (Details)
Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]
Finance and Insurance [Member]
Represents the information pertaining to finance and insurance.
Note 13 - Income Taxes - Income Tax Expense (Benefits) (Details)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
Outstanding non-vested, weighted average grant date fair value (in dollars per share)
Outstanding non-vested, weighted average grant date fair value (in dollars per share)
Note 13 - Income Taxes - Reconciliation (Details)
Note 13 - Income Taxes - Deferred Tax Assets and Liabilities (Details)
us-gaap_DeferredCompensationLiabilityCurrent
Deferred Compensation Liability, Current, Total
Note 13 - Income Taxes - Unrecognized Tax Benefits (Details)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
Outstanding non-vested shares (in shares)
Outstanding non-vested shares (in shares)
Components of ERP Platform Rquired Replacement [Member]
Represents the components of ERP Platform that will require replacement.
Note 16 - Unaudited Quarterly Financial Data - Quarterly Financial Data (Details)
Schedule of Nonvested Share Activity [Table Text Block]
Commercial Vehicle Repair Service [Member]
Represents the information pertaining to commercial vehicle repair service.
Note 17 - Segments - Segment Reporting Information (Details)
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm1
Vested and exercisable, weighted average remaining contractual life (Year)
Note 18 - Revenue - Disaggregated Revenue by Revenue Source (Details)
Parts [Member]
Represents the information pertaining to parts.
Note 19 - Accumulated Other Comprehensive Income - Components of Accumulated Other Comprehensive Income (Details)
Commercial Vehicle [Member]
Represents the information pertaining to commercial vehicle.
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Granted (in shares)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
Vested (in shares)
Notes To Financial Statements
Guarantor Obligations, Nature [Axis]
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1
Expected to vest, weighted average remaining contractual life (Year)
Notes To Financial Statements [Abstract]
Guarantor Obligations, Nature [Domain]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber
Vested and exercisable (in shares)
us-gaap_LongTermDebtCurrent
Less: current maturities
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice
Vested and exercisable, weighted average exercise price (in dollars per share)
Financial Guarantee [Member]
Insurance [Member]
Represents the information pertaining to insurance service.
Other comprehensive income net of tax and net of reclassification adjustments:
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue
Vested and exercisable, aggregate intrinsic value
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber
Expected to vest (in shares)
Other comprehensive income (loss)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice
Expected to vest, weighted average exercise price (in dollars per share)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue
Expected to vest, aggregate intrinsic value
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2
Balance, weighted average remaining contractual life (Year)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
Aggregate intrinsic value
Weighted-average fair value of stock options granted (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)
Vested, weighted average grant date fair value (in dollars per share)
Forfeited, weighted average grant date fair value (in dollars per share)
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue
Non-vested, weighted average grant date fair value (in dollars per share)
Non-vested, weighted average grant date fair value (in dollars per share)
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares
Vested (in shares)
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfShares
Forfeited (in shares)
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares
Non-vested balance (in shares)
Non-vested balance (in shares)
Retirement Plan Name [Axis]
Retirement Plan Name [Domain]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
Balance, weighted average exercise price (in dollars per share)
Balance, weighted average exercise price (in dollars per share)
us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice
Forfeited, weighted average exercise price (in dollars per share)
Customer deposits
us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
Granted, weighted average exercise price (in dollars per share)
us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice
Exercised, weighted average exercise price (in dollars per share)
Accrued expenses
Acquisition of Country Ford Trucks [Member]
Represents information pertaining to the acquisition of certain assets of Country Ford Trucks, which included real estate and a Ford truck franchise in Ceres, California, along with commercial vehicle and parts inventory.
us-gaap_ForeignCurrencyExchangeRateTranslation1
Foreign Currency Exchange Rate, Translation
Revolving Credit Facility [Member]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Balance (in shares)
Balance (in shares)
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]
Credit Facility [Axis]
Proceeds from the sale of property and equipment
Credit Facility [Domain]
us-gaap_PolicyTextBlockAbstract
Accounting Policies
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumNumberOfSharesPerEmployee
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Number of Shares Per Employee (in shares)
Franchise Rights [Member]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent
us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Acquisition of property and equipment
Employee and director stock options and restricted share awards (in shares)
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)
Assets acquired under finance leases
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)
Income taxes paid, net
Product and Service, Other [Member]
Trade accounts payable
Current liabilities:
Supplemental disclosure of cash flow information:
Segment assets
us-gaap_Assets
Total assets
Plan Name [Axis]
Plan Name [Domain]
us-gaap_PledgedAssetsNotSeparatelyReportedOtherFinancialInstruments
Inventories, new and used vehicles at cost based on specific identification, net of allowance
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total
us-gaap_PledgedAssetsNotSeparatelyReportedOnStatementOfFinancialPosition
Total
us-gaap_SubleaseIncome
Sublease Income
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)
Expenditures for segment assets
us-gaap_AdditionsToOtherAssetsAmount
us-gaap_PledgedAssetsNotSeparatelyReportedFinanceReceivables
Vehicle sale related accounts receivable
Computer Software, Intangible Asset [Member]
Finite-Lived Intangible Assets by Major Class [Axis]
Share-based Payment Arrangement [Text Block]
Finite-Lived Intangible Assets, Major Class Name [Domain]
Award Type [Domain]
Net income available to common shareholders
Award Type [Axis]
Net income
Net income
Net income
Restricted Stock Units (RSUs) [Member]
us-gaap_InterestCostsCapitalized
Interest Costs Capitalized
Restricted Stock [Member]
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
us-gaap_IndefiniteLivedFranchiseRights
Indefinite-Lived Franchise Rights
Commitments and Contingencies Disclosure [Text Block]
us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Accumulated depreciation and amortization
Property and equipment, net
Total
Goodwill
Goodwill, net
Goodwill, Ending Balance
us-gaap_PropertyPlantAndEquipmentGross
Property and equipment, gross
Lessee and Lessor Leases [Policy Text Block]
The accounting policy for leases of the lessee and lessor.
rusha_FinanceLeaseRightofuseAssetAccumulatedAmortization
Finance Lease, Right-of-Use Asset, Accumulated Amortization
Amount of accumulated depreciation on leased long-lived, physical assets used to produce goods and services and not intended for resale meeting the criteria for capitalization.
us-gaap_EquityMethodInvestmentOwnershipPercentage
Equity Method Investment, Ownership Percentage
Depreciation and Amortization [Member]
The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.
Other, net
Cash flows from investing activities:
rusha_EffectiveIncomeTaxRateReconciliationDividendReceivedDeductionPercent
Effective Income Tax Rate Reconciliation, Dividend Received Deduction, Percent
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to the deduction of dividends received.
Earnings per common share
Earnings Per Share [Text Block]
Difference between book and tax basis- Operating lease assets
Amount of deferred tax consequences attributable to taxable temporary differences derived from operating lease assets.
rusha_DeferredTaxAssetsFinanceAndOperatingLeases
Finance and operating leases
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from finance and operating leases.
Letter of Credit [Member]
us-gaap_EquityMethodInvestments
Equity Method Investments
us-gaap_LongtermDebtPercentageBearingVariableInterestAmount
Variable interest rate term notes
us-gaap_LongTermDebtPercentageBearingVariableInterestRate
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate
Change in accrued expenses
us-gaap_IncreaseDecreaseInAccruedLiabilities
Income tax provision
Provision (benefit) for income taxes
us-gaap_LongtermDebtPercentageBearingFixedInterestAmount
Fixed interest rate term notes
Stover Sales, Inc [Member]
Represents Stover Sales, Inc.
Cost of Revenue, Lease and Rental [Member]
Represents information pertaining to cost of revenue, lease and rental.
Acquisitions, Dispositions and Equity Method Investment [Text Block]
The entire disclosure for acquisitions, dispositions and equity method investment.
us-gaap_DefinedContributionPlanCostRecognized
Defined Contribution Plan, Cost
Change in trade accounts payable
us-gaap_IncreaseDecreaseInAccountsPayableTrade
us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeeAmount
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Amount
us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent
us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay
us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch
Defined Contribution Plan, Employer Matching Contribution, Percent of Match
Cash and cash equivalents
Cash and cash equivalents, beginning of year
Cash and cash equivalents, end of year
SEC Schedule, 12-09, Allowance, Credit Loss [Member]
us-gaap_AllocatedShareBasedCompensationExpense
Share-based Payment Arrangement, Expense
Amendment Flag
us-gaap_ComprehensiveIncomeNetOfTax
Comprehensive income
City Area Code
Use of Estimates, Policy [Policy Text Block]
us-gaap_DebtInstrumentPeriodicPayment
Debt Instrument, Periodic Payment, Total
New Accounting Pronouncements, Policy [Policy Text Block]
us-gaap_GainLossOnSaleOfPropertyPlantEquipment
(Gain) loss on sale of property and equipment, net
Change in customer deposits
us-gaap_IncreaseDecreaseInContractWithCustomerLiability
us-gaap_SharesOutstanding
Balance (in shares)
Balance (in shares)
Common stock, outstanding (in shares)
Preferred stock, outstanding (in shares)
us-gaap_DebtWeightedAverageInterestRate
Debt, Weighted Average Interest Rate
Financing Receivable, Allowance for Credit Loss [Table Text Block]
Current Fiscal Year End Date
us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Debt Instrument, Basis Spread on Variable Rate
us-gaap_DebtInstrumentInterestRateEffectivePercentage
Debt Instrument, Interest Rate, Effective Percentage
us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
Change in prepaid expenses and other, net
Document Fiscal Period Focus
Operating lease cost
Document Fiscal Year Focus
Consolidation, Policy [Policy Text Block]
Short-term lease cost
Lease, Cost [Table Text Block]
Document Period End Date
Guaranty agreement
The fair value of the guaranty agreement in noncash investing or financing activities.
Entity File Number
Entity Emerging Growth Company
Document Type
Sales Taxes, Policy [Policy Text Block]
Disclosure of accounting policy for sales taxes.
Entity Small Business
Entity Shell Company
us-gaap_SalesTypeLeaseLeaseReceivable
Sales-type Lease, Lease Receivable
Document Information [Line Items]
Document Information [Table]
Entity Public Float
Entity Filer Category
Debt Instrument [Axis]
Entity Current Reporting Status
Debt Instrument, Name [Domain]
Entity Voluntary Filers
us-gaap_DividendsCommonStock
Cash dividends declared
Entity Well-known Seasoned Issuer
London Interbank Offered Rate (LIBOR) [Member]
rusha_DebtInstrumentWorkingCapitalFeePercentage
Debt Instrument, Working Capital Fee Percentage
Working capital fee percentage.
us-gaap_CapitalizedComputerSoftwareAccumulatedAmortization
Capitalized Computer Software, Accumulated Amortization
us-gaap_CapitalizedComputerSoftwareNet
Capitalized Computer Software, Net, Ending Balance
Variable Rate [Domain]
Prime Rate [Member]
us-gaap_LessorOperatingLeasePaymentsToBeReceived
Total
us-gaap_IncreaseDecreaseInReceivables
Change in accounts receivable, net
us-gaap_CapitalizedComputerSoftwareAmortization1
Capitalized Computer Software, Amortization
us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)
Schedule of Long-term Debt Instruments [Table Text Block]
us-gaap_GoodwillImpairmentLoss
Goodwill, Impairment Loss
Variable Rate [Axis]
us-gaap_LessorOperatingLeasePaymentsToBeReceivedFiveYears
2025
us-gaap_ConcentrationRiskPercentage1
Concentration Risk, Percentage
us-gaap_LessorOperatingLeasePaymentsToBeReceivedThereafter
Thereafter
Quarterly Financial Information [Text Block]
Current maturities of long-term debt
Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations and line of credit.
Statement of Comprehensive Income [Abstract]
Entity Tax Identification Number
Entity Central Index Key
us-gaap_LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths
2021
us-gaap_LeaseIncome
Total
Depreciation and amortization
Depreciation and amortization
Entity Registrant Name
us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears
2022
Product Concentration Risk [Member]
us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears
2023
Stock-based compensation related to stock options, restricted shares and employee stock purchase plan
us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears
2024
Entity [Domain]
Legal Entity [Axis]
Lessor, Operating Lease, Payment to be Received, Fiscal Year Maturity [Table Text Block]
Entity Address, Address Line One
us-gaap_TreasuryStockValueAcquiredCostMethod
Common stock repurchases
Entity Address, City or Town
Entity Address, Postal Zip Code
Entity Address, State or Province
Concentration Risk Type [Axis]
Concentration Risk Type [Domain]
us-gaap_TreasuryStockValue
Treasury stock, at cost: 10,335 Class A shares and 73,437 Class B shares in 2020 and 7,583,674 Class A shares and 7,959,511 Class B shares in 2019
Entity Common Stock, Shares Outstanding
us-gaap_StockRepurchasedAndRetiredDuringPeriodShares
Common stock repurchases (in shares)
us-gaap_AdvertisingExpense
Advertising Expense
Revenue Benchmark [Member]
us-gaap_CashSurrenderValueOfLifeInsurance
Cash Surrender Value of Life Insurance
Long-term Debt [Text Block]
us-gaap_IncreaseDecreaseInInventories
Change in inventories
Trading Symbol
Concentration Risk Benchmark [Axis]
Concentration Risk Benchmark [Domain]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
Issuance of common stock under employee stock purchase plan (in shares)
Stock Issued During Period, Shares, Employee Stock Purchase Plans (in shares)
Local Phone Number
us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Line of Credit Facility, Remaining Borrowing Capacity
Stock options exercised and stock awards (in shares)
Exercised (in shares)
us-gaap_TableTextBlock
Notes Tables
Gain (loss) on sale of assets
Issuance of common stock under employee stock purchase plan
us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Line of Credit Facility, Maximum Borrowing Capacity
Vesting of restricted share awards (in shares)
Stock options exercised and stock awards
Vesting of restricted share awards
Contribution Period [Axis]
Information by contribution period.
Every 6 Months [Member]
Represents every six months.
Contribution Period [Domain]
us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture, Total (in shares)
Selling, general and administrative
Current period provision
rusha_NumberOfEmployeesEligibleToParticipateInStockPurchasePlan
Number of Employees Eligible to Participate in Stock Purchase Plan
The number of employees eligible to participate in the entity's stock purchase plan.
Granted (in shares)
Granted (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod
Forfeited (in shares)
Line of Credit Facility, Lender [Domain]
rusha_NumberOfEmployeesParticipatingInStockPurchasePlan
Number of Employees Participating in Stock Purchase Plan
The number of employees participating in the entity's stock purchase plan.
Shares Issued to Three Non-employee Directors [Member]
Represents shares issued to three non-employee directors.
Lender Name [Axis]
us-gaap_LiabilitiesAndStockholdersEquity
Total liabilities and shareholders’ equity
rusha_IssuanceOfStockAndCashForNonemployeeDirectorCompensation
Issuance of Stock and Cash for Non-employee Director Compensation
Represents the issuance of stock and cash for compensation to a non-employee director.
Retained earnings
Accumulated other comprehensive income
Unpaid Policy Claims and Claims Adjustment Expense, Policy [Policy Text Block]
Debt Disclosure [Text Block]
Interest expense
us-gaap_InterestExpense
Interest expense
Amended and Restated 2007 Incentive Plan [Member]
Represents the Amended and Restated Rush Enterprises, Inc. 2007 Long-Term Incentive Plan.
us-gaap_DisclosureTextBlockAbstract
Notes to Financial Statements
Inventory Disclosure [Text Block]
Operating lease obligations, net of current maturities
Schedule of Inventory, Current [Table Text Block]
us-gaap_OperatingLeaseLiability
Present value of lease liabilities, operating leases
Current maturities of operating lease obligations
Current maturities of finance lease obligations
Finance lease obligations, net of current maturities
Operating lease right-of-use assets, net
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue
Total lease payments, operating leases
Floor Plan Credit Agreement [Member]
Represents information regarding the Floor Plan Credit Agreement.
us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
Less: Imputed interest, operating leases
us-gaap_FinanceLeaseLiability
Present value of lease liabilities, finance leases
Cash paid for amounts included in the measurement of lease liabilities
Principal payments on finance lease obligations
(Benefit) provision for deferred income tax expense
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree
2023, operating leases
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour
2024, operating leases
us-gaap_FinanceLeaseRightOfUseAsset
Finance Lease, Right-of-Use Asset, after Accumulated Amortization, Total
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive
2025, operating leases
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive
2024 and beyond, operating leases
Fair Value Measurement, Policy [Policy Text Block]
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
Finite-Lived Intangible Assets, Amortization Expense, Year Two
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
Finite-Lived Intangible Assets, Amortization Expense, Year Three
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
Finite-Lived Intangible Assets, Amortization Expense, Year Four
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
2021, operating leases
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
Finite-Lived Intangible Assets, Amortization Expense, Year Five
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo
2022, operating leases
BMO Harris Bank N.A. [Member]
Represents information pertaining to BMO Harris Bank N.A.
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
Finite-Lived Intangible Asset, Expected Amortization, Year One
Other Receivables [Member]
Related to other receivables.
SEC Schedule, 12-09, Valuation Allowances and Reserves [Domain]
Leasing, Parts and Service Receivables [Member]
Related to leasing, parts and service receivables.
Manufacturers' Receivables [Member]
Related to manufacturers' receivables.
Commercial Vehicle Receivables [Member]
Related to commercial vehicle receivables.
Stock-based compensation expense related to employee stock options and employee stock purchases
Other assets, net
SEC Schedule, 12-09, Valuation Allowances and Reserves Type [Axis]
Business Combinations Policy [Policy Text Block]
us-gaap_AdjustmentForAmortization
Amortization, Total
Revenues from external customers
us-gaap_Revenues
Total revenue
Revenues
Income Tax, Policy [Policy Text Block]
Internal Use Software, Policy [Policy Text Block]
Central California Truck and Trailer Sales, LLC [Member]
Represents the company Central California Truck & Trailer Sales, LLC ("CCTTS").
us-gaap_LesseeOperatingLeaseTermOfContract
Lessee, Operating Lease, Term of Contract (Year)
Deferred Bonus and Profit Sharing Arrangements, Individual Contracts, Type of Deferred Compensation [Axis]
Deferred Bonus and Profit Sharing Arrangement, Individual Contract, Type of Deferred Compensation [Domain]
Floor plan notes payable
Floor Plan Notes Payable
Amounts borrowed to finance the purchase of new and used commercial vehicle inventory.
us-gaap_Depreciation
Depreciation, Total
us-gaap_StockholdersEquityNoteStockSplitConversionRatio1
Stockholders' Equity Note, Stock Split, Conversion Ratio
Depreciation and amortization
us-gaap_DepreciationDepletionAndAmortization
(Payments) draws on floor plan notes payable – trade, net
rusha_IncreaseDecreaseInFloorPlanNotesPayableTradeNet
Increase or decrease in amounts borrowed to finance the purchase of new and used commercial vehicle inventory.
(Payments) draws on floor plan notes payable – non-trade, net
The net change during the reporting period in commercial vehicle floor plan due by the reporting entity.
us-gaap_AssetsCurrent
Total current assets
Share-based Payment Arrangement [Policy Text Block]
Trade Accounts Receivable From Sale of Vehicles [Member]
Trade Receivable Other Than Vehicles [Member]
rusha_InventoryNewCommercialVehiclesGross
New commercial vehicles
Inventory, new commercial vehicles, gross.
rusha_InventoryUsedCommercialVehiclesGross
Used commercial vehicles
Inventory, used commercial vehicles, gross.
Allowance for Warranty Receivables From Manufacturers [Member]
Represents the allowance for warranty receivables from manufacturers.
Parts Inventory [Member]
Commercial Vehicle Inventory [Member]
Treasury stock (in shares)
Selling, General and Administrative Expenses, Policy [Policy Text Block]
Assets held for sale
Advertising Cost [Policy Text Block]
Ford Motor Financing Agreement [Member]
rusha_LineOfCreditAmountPledgedToSecureLettersOfCredit
Line of Credit Amount Pledged to Secure Letters of Credit
Line of credit, amount pledged to secure letters of credit.
Common stock, par value $.01 per share; 60,000,000 Class A shares and 20,000,000 Class B shares authorized; 42,503,925 Class A shares and 12,470,308 Class B shares outstanding in 2020; and 41,930,472 Class A shares and 12,360,729 Class B shares outstanding in 2019
Assets Pledged As Collateral [Table Text Block]
Tablular disclosure of assets pledged as collateral.
Variable Interest Rate Notes [Member]
Fixed Interest Rate Notes [Member]
Adjustments to reconcile net income to net cash provided by operating activities
Common stock, authorized (in shares)
Common stock, par value (in dollars per share)
Common Stock, Par or Stated Value Per Share (in dollars per share)
Deferred Tax Asset [Domain]
us-gaap_CommonStockCapitalSharesReservedForFutureIssuance
Common Stock, Capital Shares Reserved for Future Issuance (in shares)
us-gaap_DeferredTaxAssetsValuationAllowance
Deferred Tax Assets, Valuation Allowance, Total
Statistical Measurement [Domain]
us-gaap_OperatingLeasePayments
Cash paid for amounts included in the measurement of lease liabilities
Maximum [Member]
Summary of Valuation Allowance [Table Text Block]
Minimum [Member]
us-gaap_CommonStockVotingRights
Common Stock, Voting Rights
Valuation Allowance by Deferred Tax Asset [Axis]
Product and Service [Axis]
Product and Service [Domain]
Statistical Measurement [Axis]
Investment, Name [Domain]
rusha_MaximumFairValueForEmployeeStockPurchasePerYear
Maximum Fair Value for Employee Stock Purchase Per Year
Maximum fair value for employee stock purchase per year.
Employee Stock Purchase Plan [Member]
Employee stock purchase plan member.
The 2006 Non-Employee Director Stock Option Plan [Member]
The 2006 non-employee director stock option plan member.
Preferred stock, par value $.01 per share; 1,000,000 shares authorized; 0 shares outstanding in 2020 and 2019
Intangible Assets, Finite-Lived, Policy [Policy Text Block]
Interest
Investment, Name [Axis]
Highly Compensated Employees [Member]
Highly compensated employees member.
us-gaap_DeferredTaxAssetsOther
Other
Shares Issued to One Nonemployee Director [Member]
Shares issued to one nonemployee director member.
Goodwill and Intangible Assets, Policy [Policy Text Block]
rusha_PaymentToNonemployeeDirectors
Payment to Nonemployee Directors
Payment to non-employee directors.
Property, Plant and Equipment [Table Text Block]
Preferred stock, authorized (in shares)
Shares Issued to Two Nonemployee Directors [Member]
Shares issued to two nonemployee directors member.
us-gaap_DeferredIncomeTaxLiabilities
Total
Lease and rental
Inventories, net
Total
Preferred stock, par value (in dollars per share)
Outstanding non-vested, aggregate intrinsic value
Share based compensation arrangement by share based payment award, equity instruments other than options, nonvested aggregate intrinsic value.
rusha_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedExpectedToVest
Expected to vest (in shares)
Share based compensation arrangement by share based payment award, equity instruments other than options, nonvested expected to vest.
rusha_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedExpectedToVestWeightedAverageRemainingContractualTerms
Expected to vest, weighted average remaining contractual life (Year)
Share based compensation arrangement by share based payment award equity instruments other than options, nonvested expected to vest, weighted average remaining contractual terms.
rusha_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedExpectedToVestAggregateIntrinsicValue
Expected to vest, aggregate intrinsic value
Share based compensation arrangement by share based payment award equity instruments other than options nonvested expected to vest aggregate intrinsic value.
us-gaap_InventoryValuationReserves
Less allowance
us-gaap_OtherInventory
Other
us-gaap_DeferredTaxAssetsInventory
Inventory
us-gaap_OtherInventoryPurchasedGoods
Parts and accessories
us-gaap_ProductWarrantyAccrualPayments
Warranty claims
us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther
Finance lease obligations
us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals
Accounts receivable
Truck Segment [Member]
Represents the truck segment.
Rush 401 Plan [Member]
Represents the “Rush 401k Plan”, which is available to all Company employees and the employees of certain affiliates.
us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities
Accrued liabilities
Interest income (expense):
Employees with More Than Five Years of Service [Member]
Represents employees with more than five years of service.
us-gaap_PropertyPlantAndEquipmentUsefulLife
Property and equipment, estimated life (Year)
us-gaap_InterestIncomeExpenseNet
Total interest expense, net
Employees with Less than Five Years of Service [Member]
Represents employees with less than five years of service.
Construction in Progress [Member]
Deferred Compensation Plan [Member]
Represents the Rush Enterprises, Inc. Deferred Compensation Plan (the “Deferred Compensation Plan”) pursuant to which selected employees and directors may elect to defer a portion of their annual compensation.
rusha_DeferredCompensationArrangementWithIndividualVestedPercentage
Deferred Compensation Arrangement with Individual, Vested Percentage
Deferred compensation arrangement with an individual's vested percentage.
Cash flows from operating activities:
Schedule of Segment Reporting Information, by Segment [Table Text Block]
Revenue [Policy Text Block]
Statement [Line Items]
us-gaap_AccountsReceivableGrossCurrent
Trade receivables
us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Less allowance for credit losses
Balance
Balance
us-gaap_NumberOfOperatingSegments
Number of Operating Segments
Furniture and Fixtures [Member]
Accounts receivable, net
Total
us-gaap_NumberOfReportableSegments
Number of Reportable Segments
us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
Stock options
Building and Building Improvements [Member]
Revenues
Rush Truck Centres of Canada Limited [Member]
Information related to Rush Truck Centres of Canada Limited.
AOCI Attributable to Parent [Member]
Additional paid-in capital
Shareholders’ equity:
Land [Member]
Leasehold Improvements [Member]
us-gaap_DeferredTaxAssetsOtherTaxCarryforwards
State tax credit
Property, Plant and Equipment, Policy [Policy Text Block]
Long-Lived Tangible Asset [Axis]
rusha_LesseeLeasesTermOfContract
Lessee, Leases, Term of Contract (Month)
Term of lessee's finance and operating leases, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.
Other income
Long-Lived Tangible Asset [Domain]
rusha_EquityMethodInvestmentRemainingOwnershipPercentageNotYetAcquired
Equity Method Investment, Remaining Ownership Percentage Not Yet Acquired
The remaining percentage of ownership not yet acquired of common stock or equity participation in the investee accounted for under the equity method of accounting.
Segment Reporting Disclosure [Text Block]
us-gaap_DeferredTaxAssetsOperatingLossCarryforwards
Deferred Tax Assets, Operating Loss Carryforwards, Total
us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal
State net operating loss carry forward
Current assets:
Fair Value Disclosures [Text Block]
Inventory, Policy [Policy Text Block]
Interest income
Interest income
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
Net increase (decrease) in cash and cash equivalents
rusha_LesseeLeasesResidualValueGuaranteeAmount
Lessee, Leases, Residual Value Guarantee, Amount
The amount of residual value guarantee provided by lessee on leases.
us-gaap_NetCashProvidedByUsedInFinancingActivities
Net cash (used in) provided by financing activities
rusha_LessorLeasesTermOfContract
Lessor, Leases, Term of Contract (Year)
Term of lessor's leases, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.
Segment operating income
us-gaap_OperatingIncomeLoss
Operating income
Operating income
us-gaap_NetCashProvidedByUsedInOperatingActivities
Net cash provided by operating activities
us-gaap_NetCashProvidedByUsedInInvestingActivities
Net cash used in investing activities
us-gaap_DeferredTaxLiabilities
Net deferred income tax liability
Prepaid expenses and other
Operating lease right-of-use assets obtained in exchange for lease obligations
Amount of increase in right-of-use asset obtained in exchange for lease liability.
Leases of Lessee and Lessor Disclosure [Text Block]
The entire disclosure for lessee and lessor entity's leasing arrangements including, but not limited to, all of the following: (a.) The basis on which contingent rental payments are determined, (b.) The existence and terms of renewal or purchase options and escalation clauses, (c.) Restrictions imposed by lease agreements, such as those concerning dividends, additional debt, and further leasing.
us-gaap_CostOfRevenue
Total cost of products sold
us-gaap_GrossProfit
Gross profit
Gross profit
us-gaap_CostOfGoodsAndServicesSold
Cost of products sold
Lessee, Lease Liability, Maturity [Table Text Block]
Tabular disclosure of lessee's lease liability.
Weighted-average discount rate
Weighted average discount rate for leases calculated at point in time.
Weighted-average remaining lease term (in months) (Month)
Weighted average remaining lease term for leases, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.
Nonlease payments
Amount of payments received by lessor for non lease.
Deferred income taxes, net
Minimum rental payments
Amount of lease payments received by lessor for leases.
Leases, Lease Income [Table Text Block]
Tabular disclosure of components of income from leases.
rusha_IssuanceOfCashForNonemployeeDirectorCompensationPercent
Issuance of Cash for Non-employee Director Compensation, Percent
Represents the maximum percent of issuance of cash for compensation to a non-employee director.
Difference between book and tax basis- Depreciation and amortization
Deferred income tax (assets) liabilities:
us-gaap_PaymentsOfDividends
Payments of cash dividends
Cost of products sold
us-gaap_UndistributedEarningsOfForeignSubsidiaries
Undistributed Earnings of Foreign Subsidiaries
us-gaap_PaymentsForRepurchaseOfCommonStock
Common stock repurchased
Cost of Goods and Service [Policy Text Block]
Retained Earnings [Member]
us-gaap_ProceedsFromStockOptionsExercised
Proceeds from Stock Options Exercised
Revenue
Title of Individual [Domain]
us-gaap_CurrentStateAndLocalTaxExpenseBenefit
State, Current
Title of Individual [Axis]
us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit
State, Deferred
Treasury Stock [Member]
Proceeds from issuance of shares relating to employee stock options and employee stock purchases
Foreign, Deferred
Additional Paid-in Capital [Member]
us-gaap_CurrentFederalTaxExpenseBenefit
Federal, Current
Common Stock [Member]
us-gaap_DeferredFederalIncomeTaxExpenseBenefit
Federal, Deferred
Deferred provision
Equity Components [Axis]
Equity Component [Domain]
Current provision
us-gaap_LongTermDebt
Total
Total Current
Other Noncurrent Assets [Member]
Other Noncurrent Liabilities [Member]
us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign
Foreign
Other Assets [Member]
Segment income from continuing operations before taxes
us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Income before taxes
Income before income taxes
Cancellation of treasury stock
Amount of adjustments to equity related to the cancellation of treasury stock.
us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
Domestic
rusha_TreasuryStockCancellationShare
Cancellation of treasury stock (in shares)
Amount of adjustments to shares outstanding related to cancellation of treasury stock.
Stock Split From [Member]
Represents the stock split from.
Stock Split To [Member]
Represents the stock split to.
rusha_AdditionalShareIssuedForEveryTwoSharesOfCommonStock
Additional Share Issued for Every Two Shares of Common Stock (in shares)
The additional share issued for every two shares of common stock.
Comprehensive Income (Loss) Note [Text Block]
us-gaap_LineOfCredit
Long-term Line of Credit, Total
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
us-gaap_PaymentsOfDebtIssuanceCosts
Debt issuance costs
State and Local Jurisdiction [Member]
Vehicles [Member]
Income Tax Authority [Axis]
Income Tax Authority [Domain]
Disaggregation of Revenue [Table Text Block]
Domestic Tax Authority [Member]
Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block]
rusha_LesseeOperatingLeaseOptionToTerminateTerm
Lessee, Operating Lease, Option To Terminate Term (Year)
Term of lessee's operating lease option to terminate, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.
Revenue from Contract with Customer [Text Block]
rusha_CallOptionFairValueDisclosure
Call Option, Fair Value Disclosure
Fair value portion of the call option.
Transportation Equipment [Member]
Document Annual Report
Machinery and Equipment [Member]
Cash and Cash Equivalents, Policy [Policy Text Block]
Balance Sheet Location [Axis]
Balance Sheet Location [Domain]
Entity Incorporation, State or Country Code
us-gaap_UnrecognizedTaxBenefits
Unrecognized tax benefits at beginning of period
Unrecognized tax benefits at end of period
us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
Unrecognized Tax Benefits that Would Impact Effective Tax Rate
Accounting Policies [Abstract]
Significant Accounting Policies [Text Block]
us-gaap_OpenTaxYear
Open Tax Year
Document Transition Report
us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations
Reductions due to lapse of statute of limitations
Concentration Risk Disclosure [Text Block]
us-gaap_RepaymentsOfLongTermLinesOfCredit
Payments on line of credit
Selling, General and Administrative Expenses [Member]
Entity Interactive Data Current
us-gaap_RepaymentsOfMediumTermNotes
Principal payments on long-term debt
Dividends declared per common share (in dollars per share)
Interest Expense [Member]
Security Exchange Name
us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions
Gross increases – tax positions in current year
Title of 12(b) Security
us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs
Write offs against allowance, net of recoveries
us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued
Unrecognized Tax Benefits, Income Tax Penalties Accrued
us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued
Unrecognized Tax Benefits, Interest on Income Taxes Accrued
Proceeds from long-term debt
Receivable Type [Axis]
Receivable [Domain]
us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense
Unrecognized Tax Benefits, Interest on Income Taxes Expense
us-gaap_ValuationAllowancesAndReservesBalance
Balance
Balance End of Year
us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense
Net Charged to Costs and Expenses
Income Statement Location [Axis]
Income Statement Location [Domain]
us-gaap_ValuationAllowancesAndReservesDeductions
Net Write-Offs
Nonmonetary Transaction Type [Domain]
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
Nonmonetary Transaction Type [Axis]
Deferred Tax Assets Related to Operating Loss Carryforwards [Member]
Deferred Tax Assets which are related to operating loss carryforwards.
Segments [Axis]
Segments [Domain]
Other Segments [Member]
Proceeds from the sale of available for sale securities
us-gaap_SharePrice
Share Price (in dollars per share)
Anti-dilutive options – weighted average (in shares)
us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Denominator for diluted earnings per share - adjusted weighted average shares outstanding and assumed conversions (in shares)
us-gaap_OperatingLossCarryforwards
Operating Loss Carryforwards, Total
Draws on line of credit
SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]
Statement [Table]
Statement of Financial Position [Abstract]
us-gaap_EarningsPerShareDiluted
Diluted (in dollars per share)
Denominator for basic earnings per share – weighted average shares outstanding (in shares)
us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Diluted earnings per common share and common share equivalents (in dollars per share)
Business Acquisition [Axis]
us-gaap_EarningsPerShareBasic
Basic (in dollars per share)
Business Acquisition, Acquiree [Domain]
Basic earnings per common share (in dollars per share)
Statement of Cash Flows [Abstract]
Statement of Stockholders' Equity [Abstract]
Foreign currency translation adjustment
Income Statement [Abstract]
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
2023
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
2024
Disposal Group Name [Axis]
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
2025
Disposal Group Name [Domain]
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive
Thereafter
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
2021
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
2022
Quarterly Financial Information [Table Text Block]
Finance lease cost – interest on lease liabilities
us-gaap_FinanceLeaseLiabilityPaymentsDue
Total lease payments, finance leases
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]
Finance lease cost – amortization of right-of-use assets
us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive
2025, finance leases
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive
2026 and beyond, finance leases
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount
Less: Imputed interest, finance leases
us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths
2021, finance leases
us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo
2022, finance leases
us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree
2023, finance leases
us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour
2024, finance leases
us-gaap_PaymentsForProceedsFromOtherInvestingActivities
Other
us-gaap_IncomeTaxReconciliationOtherAdjustments
Tax effect of permanent differences
Cash flows from financing activities:
us-gaap_IncomeTaxReconciliationOtherReconcilingItems
Other, net
Other long-term liabilities
us-gaap_ProceedsFromDivestitureOfBusinesses
Proceeds from Divestiture of Businesses
us-gaap_StockholdersEquity
Total shareholders’ equity
Balance
Balance
Common Class A [Member]
Common Class B [Member]
us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionQuantityOfSecuritiesIssued
Share-based Goods and Nonemployee Services Transaction, Quantity of Securities Issued (in shares)
us-gaap_PaymentsToAcquireEquityMethodInvestments
Purchase of equity method investment and call option
Class of Stock [Axis]
Supplier [Axis]
Class of Stock [Domain]
Supplier [Domain]
Long-term debt, net of current maturities
Total long-term debt, net of current maturities
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
us-gaap_PaymentsToAcquireBusinessesGross
Payments to Acquire Businesses, Gross
Business acquisitions
Option Indexed to Issuer's Equity, Type [Domain]
Financial Service [Member]
Option Indexed to Issuer's Equity [Axis]
us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes
State income taxes, net of federal benefit
us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential
Foreign tax rate differential