XML 19 R70.htm IDEA: XBRL DOCUMENT
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Note 11 - Share Based Compensation and Employee Benefit Plans (Details) (USD $) | 12 Months Ended | 11 Months Ended | 13 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2012 | Jan. 31, 2012 | May 20, 2014 | May 18, 2010 | May 16, 2006
Note 11 - Share Based Compensation and Employee Benefit Plans (Details) [Line Items] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares) | 459,058 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross |  |  |  |  |  |  |
Allocated Share-based Compensation Expense | $ 11,300,000 us-gaap_AllocatedShareBasedCompensationExpense | $ 8,600,000 us-gaap_AllocatedShareBasedCompensationExpense | $ 7,300,000 us-gaap_AllocatedShareBasedCompensationExpense |  |  |  |  |
Proceeds from Stock Options Exercised | 12,500,000 us-gaap_ProceedsFromStockOptionsExercised | 10,000,000 us-gaap_ProceedsFromStockOptionsExercised | 5,100,000 us-gaap_ProceedsFromStockOptionsExercised |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value | 18,700,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue | 10,500,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue | 5,600,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value | 3,300,000 us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1 | 3,400,000 us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1 | 2,400,000 us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share) | $ 15.86 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue | $ 12.69 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue | $ 10.95 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue |  |  |  |  |
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) | $ 26.81 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue | $ 22.12 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue | $ 21.98 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue |  |  |  |  |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized | 15,800,000 us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized |  |  |  |  |  |  |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition | 2 years 255 days |  |  |  |  |  |  |
Every Six Months [Member] | Employee Stock Purchase Plan [Member] |  |  |  |  |  |  |  |
Note 11 - Share Based Compensation and Employee Benefit Plans (Details) [Line Items] |  |  |  |  |  |  |  |
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Amount | 10,625 us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeeAmount / rusha_ContributionPeriodAxis = rusha_EverySixMonthsMember / us-gaap_PlanNameAxis = rusha_EmployeeStockPurchasePlanMember |  |  |  |  |  |  |
Common Class A [Member] | Restricted Stock Units (RSUs) [Member] | Amended and Restated 2007 Incentive Plan [Member] |  |  |  |  |  |  |  |
Note 11 - Share Based Compensation and Employee Benefit Plans (Details) [Line Items] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in Shares) | 25,550 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember / us-gaap_PlanNameAxis = rusha_AmendedAndRestated2007IncentivePlanMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember |  |  |  |  |  |  |
Common Class A [Member] | Restricted Stock Units (RSUs) [Member] | The 2007 Long-Term Incentive Plan [Member] |  |  |  |  |  |  |  |
Note 11 - Share Based Compensation and Employee Benefit Plans (Details) [Line Items] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in Shares) |  | 241,930 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember / us-gaap_PlanNameAxis = rusha_The2007LongTermIncentivePlanMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember |  |  |  |  |  |
Common Class A [Member] | Shares Issued to Three Non-Employee Directors [Member] | The 2006 Non-Employee Director Stock Option Plan [Member] |  |  |  |  |  |  |  |
Note 11 - Share Based Compensation and Employee Benefit Plans (Details) [Line Items] |  |  |  |  |  |  |  |
Share-based Goods and Nonemployee Services Transaction, Quantity of Securities Issued (in Shares) |  | 4,512 us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionQuantityOfSecuritiesIssued / us-gaap_OtherSignificantNoncashTransactionsByUniqueDescriptionAxis = rusha_SharesIssuedToThreeNonemployeeDirectorsMember / us-gaap_PlanNameAxis = rusha_The2006NonemployeeDirectorStockOptionPlanMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember |  |  |  |  |  |
Common Class A [Member] | Shares Issued to One Non-Employee Director [Member] | The 2006 Non-Employee Director Stock Option Plan [Member] |  |  |  |  |  |  |  |
Note 11 - Share Based Compensation and Employee Benefit Plans (Details) [Line Items] |  |  |  |  |  |  |  |
Share-based Goods and Nonemployee Services Transaction, Quantity of Securities Issued (in Shares) | 3,101 us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionQuantityOfSecuritiesIssued / us-gaap_OtherSignificantNoncashTransactionsByUniqueDescriptionAxis = rusha_SharesIssuedToOneNonemployeeDirectorMember / us-gaap_PlanNameAxis = rusha_The2006NonemployeeDirectorStockOptionPlanMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember | 2,707 us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionQuantityOfSecuritiesIssued / us-gaap_OtherSignificantNoncashTransactionsByUniqueDescriptionAxis = rusha_SharesIssuedToOneNonemployeeDirectorMember / us-gaap_PlanNameAxis = rusha_The2006NonemployeeDirectorStockOptionPlanMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember |  |  |  |  |  |
Common Class A [Member] | Shares Issued to Four Nonemployee Directors [Member] | The 2006 Non-Employee Director Stock Option Plan [Member] |  |  |  |  |  |  |  |
Note 11 - Share Based Compensation and Employee Benefit Plans (Details) [Line Items] |  |  |  |  |  |  |  |
Share-based Goods and Nonemployee Services Transaction, Quantity of Securities Issued (in Shares) | 3,877 us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionQuantityOfSecuritiesIssued / us-gaap_OtherSignificantNoncashTransactionsByUniqueDescriptionAxis = rusha_SharesIssuedToFourNonemployeeDirectorsMember / us-gaap_PlanNameAxis = rusha_The2006NonemployeeDirectorStockOptionPlanMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember |  |  |  |  |  |  |
Common Class A [Member] | Shares Issued to One Non-Employee Director 2 [Member] | The 2006 Non-Employee Director Stock Option Plan [Member] |  |  |  |  |  |  |  |
Note 11 - Share Based Compensation and Employee Benefit Plans (Details) [Line Items] |  |  |  |  |  |  |  |
Share-based Goods and Nonemployee Services Transaction, Quantity of Securities Issued (in Shares) | 2,326 us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionQuantityOfSecuritiesIssued / us-gaap_OtherSignificantNoncashTransactionsByUniqueDescriptionAxis = rusha_SharesIssuedToOneNonEmployeeDirector2Member / us-gaap_PlanNameAxis = rusha_The2006NonemployeeDirectorStockOptionPlanMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember |  |  |  |  |  |  |
Common Class A [Member] | The 2006 Non-Employee Director Stock Option Plan [Member] |  |  |  |  |  |  |  |
Note 11 - Share Based Compensation and Employee Benefit Plans (Details) [Line Items] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in Shares) | 218,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant / us-gaap_PlanNameAxis = rusha_The2006NonemployeeDirectorStockOptionPlanMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares) | 500,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized / us-gaap_PlanNameAxis = rusha_The2006NonemployeeDirectorStockOptionPlanMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember |  |  |  |  |  |  |
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures (in Shares) | 20,935 us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation / us-gaap_PlanNameAxis = rusha_The2006NonemployeeDirectorStockOptionPlanMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember | 16,243 us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation / us-gaap_PlanNameAxis = rusha_The2006NonemployeeDirectorStockOptionPlanMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember |  |  |  |  |  |
Common Class A [Member] | Amended and Restated 2007 Incentive Plan [Member] |  |  |  |  |  |  |  |
Note 11 - Share Based Compensation and Employee Benefit Plans (Details) [Line Items] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in Shares) | 1,805,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant / us-gaap_PlanNameAxis = rusha_AmendedAndRestated2007IncentivePlanMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares) |  |  |  |  |  | 6,050,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized / us-gaap_PlanNameAxis = rusha_AmendedAndRestated2007IncentivePlanMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember |  |
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Number of Shares Per Employee (in Shares) | 100,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumNumberOfSharesPerEmployee / us-gaap_PlanNameAxis = rusha_AmendedAndRestated2007IncentivePlanMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares) | 459,058 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / us-gaap_PlanNameAxis = rusha_AmendedAndRestated2007IncentivePlanMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember |  |  |  |  |  |  |
Common Class A [Member] | The 2007 Long-Term Incentive Plan [Member] |  |  |  |  |  |  |  |
Note 11 - Share Based Compensation and Employee Benefit Plans (Details) [Line Items] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares) |  | 400,633 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / us-gaap_PlanNameAxis = rusha_The2007LongTermIncentivePlanMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember |  |  |  |  |  |
Common Class A [Member] |  |  |  |  |  |  |  |
Note 11 - Share Based Compensation and Employee Benefit Plans (Details) [Line Items] |  |  |  |  |  |  |  |
Share Price (in Dollars per share) | $ 32.05 us-gaap_SharePrice / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember |  |  |  |  |  |  |
Common Class B [Member] | Per Year [Member] | Amended and Restated 2007 Incentive Plan [Member] |  |  |  |  |  |  |  |
Note 11 - Share Based Compensation and Employee Benefit Plans (Details) [Line Items] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Number of Shares Per Employee (in Shares) | 100,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumNumberOfSharesPerEmployee / us-gaap_PlanNameAxis = rusha_AmendedAndRestated2007IncentivePlanMember / rusha_PlanPeriodAxis = rusha_PerYearMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember |  |  |  |  |  |  |
Common Class B [Member] | Restricted Stock Units (RSUs) [Member] | Amended and Restated 2007 Incentive Plan [Member] |  |  |  |  |  |  |  |
Note 11 - Share Based Compensation and Employee Benefit Plans (Details) [Line Items] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in Shares) | 207,370 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember / us-gaap_PlanNameAxis = rusha_AmendedAndRestated2007IncentivePlanMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember |  |  |  |  |  |  |
Common Class B [Member] | Amended and Restated 2007 Incentive Plan [Member] |  |  |  |  |  |  |  |
Note 11 - Share Based Compensation and Employee Benefit Plans (Details) [Line Items] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in Shares) | 1,013,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant / us-gaap_PlanNameAxis = rusha_AmendedAndRestated2007IncentivePlanMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares) |  |  |  |  |  | 1,450,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized / us-gaap_PlanNameAxis = rusha_AmendedAndRestated2007IncentivePlanMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember |  |
Restricted Stock Units (RSUs) [Member] | Amended and Restated 2007 Incentive Plan [Member] |  |  |  |  |  |  |  |
Note 11 - Share Based Compensation and Employee Benefit Plans (Details) [Line Items] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 3 years |  |  |  |  |  |  |
Restricted Stock [Member] |  |  |  |  |  |  |  |
Note 11 - Share Based Compensation and Employee Benefit Plans (Details) [Line Items] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in Shares) | 253,855 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value |  | 3,500,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember |  |  |  |  |  |
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) | $ 26.81 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember |  |  |  |  |  |  |
Deferred Compensation Plan [Member |  |  |  |  |  |  |  |
Note 11 - Share Based Compensation and Employee Benefit Plans (Details) [Line Items] |  |  |  |  |  |  |  |
Deferred Compensation Arrangement With Individual, Vested Percentage |  | 100.00%rusha_DeferredCompensationArrangementWithIndividualVestedPercentage / us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis = rusha_DeferredCompensationPlanMember |  |  |  |  |  |
Deferred Compensation Liability, Current | 3,000,000 us-gaap_DeferredCompensationLiabilityCurrent / us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis = rusha_DeferredCompensationPlanMember | 1,700,000 us-gaap_DeferredCompensationLiabilityCurrent / us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis = rusha_DeferredCompensationPlanMember |  |  |  |  |  |
Cash Surrender Value of Life Insurance | 2,900,000 us-gaap_CashSurrenderValueOfLifeInsurance / us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis = rusha_DeferredCompensationPlanMember | 1,600,000 us-gaap_CashSurrenderValueOfLifeInsurance / us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis = rusha_DeferredCompensationPlanMember |  |  |  |  |  |
Rush 401k Plan [Member] | Minimum [Member] |  |  |  |  |  |  |  |
Note 11 - Share Based Compensation and Employee Benefit Plans (Details) [Line Items] |  |  |  |  |  |  |  |
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent | 1.00%us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent / us-gaap_DefinedContributionPlanNameAxis = rusha_Rush401kPlanMember / us-gaap_RangeAxis = us-gaap_MinimumMember |  |  |  |  |  |  |
Rush 401k Plan [Member] | Maximum [Member] |  |  |  |  |  |  |  |
Note 11 - Share Based Compensation and Employee Benefit Plans (Details) [Line Items] |  |  |  |  |  |  |  |
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent | 50.00%us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent / us-gaap_DefinedContributionPlanNameAxis = rusha_Rush401kPlanMember / us-gaap_RangeAxis = us-gaap_MaximumMember |  |  |  |  |  |  |
Rush 401k Plan [Member] | Highly Compensated Employees [Member] |  |  |  |  |  |  |  |
Note 11 - Share Based Compensation and Employee Benefit Plans (Details) [Line Items] |  |  |  |  |  |  |  |
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent | 15.00%us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent / us-gaap_DefinedContributionPlanNameAxis = rusha_Rush401kPlanMember / us-gaap_TitleOfIndividualAxis = rusha_HighlyCompensatedEmployeesMember |  |  |  |  |  |  |
Rush 401k Plan [Member] | Employees With Less Than Five Years Of Service [Member] |  |  |  |  |  |  |  |
Note 11 - Share Based Compensation and Employee Benefit Plans (Details) [Line Items] |  |  |  |  |  |  |  |
Defined Contribution Plan, Employer Matching Contribution, Percent of Match |  |  |  | 20.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch / us-gaap_DefinedContributionPlanNameAxis = rusha_Rush401kPlanMember / us-gaap_TitleOfIndividualAxis = rusha_EmployeesWithLessThanFiveYearsOfServiceMember | 15.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch / us-gaap_DefinedContributionPlanNameAxis = rusha_Rush401kPlanMember / us-gaap_TitleOfIndividualAxis = rusha_EmployeesWithLessThanFiveYearsOfServiceMember |  |  |
Rush 401k Plan [Member] | Employees With More Than Five Years Of Service [Member] |  |  |  |  |  |  |  |
Note 11 - Share Based Compensation and Employee Benefit Plans (Details) [Line Items] |  |  |  |  |  |  |  |
Defined Contribution Plan, Employer Matching Contribution, Percent of Match |  |  |  | 40.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch / us-gaap_DefinedContributionPlanNameAxis = rusha_Rush401kPlanMember / us-gaap_TitleOfIndividualAxis = rusha_EmployeesWithMoreThanFiveYearsOfServiceMember | 30.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch / us-gaap_DefinedContributionPlanNameAxis = rusha_Rush401kPlanMember / us-gaap_TitleOfIndividualAxis = rusha_EmployeesWithMoreThanFiveYearsOfServiceMember |  |  |
Rush 401k Plan [Member] |  |  |  |  |  |  |  |
Note 11 - Share Based Compensation and Employee Benefit Plans (Details) [Line Items] |  |  |  |  |  |  |  |
Contribution Plan Period For Eligibility | 90 days |  |  |  |  |  |  |
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay |  |  |  | 10.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent / us-gaap_DefinedContributionPlanNameAxis = rusha_Rush401kPlanMember | 10.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent / us-gaap_DefinedContributionPlanNameAxis = rusha_Rush401kPlanMember |  |  |
Defined Contribution Plan, Cost Recognized | 5,200,000 us-gaap_DefinedContributionPlanCostRecognized / us-gaap_DefinedContributionPlanNameAxis = rusha_Rush401kPlanMember | 4,400,000 us-gaap_DefinedContributionPlanCostRecognized / us-gaap_DefinedContributionPlanNameAxis = rusha_Rush401kPlanMember | 3,700,000 us-gaap_DefinedContributionPlanCostRecognized / us-gaap_DefinedContributionPlanNameAxis = rusha_Rush401kPlanMember |  |  |  |  |
Shares Issued to One Non-Employee Director [Member] | The 2006 Non-Employee Director Stock Option Plan [Member] |  |  |  |  |  |  |  |
Note 11 - Share Based Compensation and Employee Benefit Plans (Details) [Line Items] |  |  |  |  |  |  |  |
Payment to Non-Employee Directors | 25,000 rusha_PaymentToNonemployeeDirectors / us-gaap_OtherSignificantNoncashTransactionsByUniqueDescriptionAxis = rusha_SharesIssuedToOneNonemployeeDirectorMember / us-gaap_PlanNameAxis = rusha_The2006NonemployeeDirectorStockOptionPlanMember | 50,000 rusha_PaymentToNonemployeeDirectors / us-gaap_OtherSignificantNoncashTransactionsByUniqueDescriptionAxis = rusha_SharesIssuedToOneNonemployeeDirectorMember / us-gaap_PlanNameAxis = rusha_The2006NonemployeeDirectorStockOptionPlanMember |  |  |  |  |  |
Issuance of Stock and Cash for Non-employee Director Compensation | 125,000 rusha_IssuanceOfStockAndCashForNonEmployeeDirectorCompensation / us-gaap_OtherSignificantNoncashTransactionsByUniqueDescriptionAxis = rusha_SharesIssuedToOneNonemployeeDirectorMember / us-gaap_PlanNameAxis = rusha_The2006NonemployeeDirectorStockOptionPlanMember | 125,000 rusha_IssuanceOfStockAndCashForNonEmployeeDirectorCompensation / us-gaap_OtherSignificantNoncashTransactionsByUniqueDescriptionAxis = rusha_SharesIssuedToOneNonemployeeDirectorMember / us-gaap_PlanNameAxis = rusha_The2006NonemployeeDirectorStockOptionPlanMember |  |  |  |  |  |
Shares Issued to One Non-Employee Director 2 [Member] | The 2006 Non-Employee Director Stock Option Plan [Member] |  |  |  |  |  |  |  |
Note 11 - Share Based Compensation and Employee Benefit Plans (Details) [Line Items] |  |  |  |  |  |  |  |
Payment to Non-Employee Directors | 50,000 rusha_PaymentToNonemployeeDirectors / us-gaap_OtherSignificantNoncashTransactionsByUniqueDescriptionAxis = rusha_SharesIssuedToOneNonEmployeeDirector2Member / us-gaap_PlanNameAxis = rusha_The2006NonemployeeDirectorStockOptionPlanMember |  |  |  |  |  |  |
Issuance of Stock and Cash for Non-employee Director Compensation | 125,000 rusha_IssuanceOfStockAndCashForNonEmployeeDirectorCompensation / us-gaap_OtherSignificantNoncashTransactionsByUniqueDescriptionAxis = rusha_SharesIssuedToOneNonEmployeeDirector2Member / us-gaap_PlanNameAxis = rusha_The2006NonemployeeDirectorStockOptionPlanMember |  |  |  |  |  |  |
Employee Stock Purchase Plan [Member] |  |  |  |  |  |  |  |
Note 11 - Share Based Compensation and Employee Benefit Plans (Details) [Line Items] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent | 85.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent / us-gaap_PlanNameAxis = rusha_EmployeeStockPurchasePlanMember |  |  |  |  |  |  |
Maximum Fair Value for Employee Stock Purchase Per Year | $ 25,000 rusha_MaximumFairValueForEmployeeStockPurchasePerYear / us-gaap_PlanNameAxis = rusha_EmployeeStockPurchasePlanMember |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in Shares) | 250,500 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant / us-gaap_PlanNameAxis = rusha_EmployeeStockPurchasePlanMember |  |  |  |  |  |  |
Common Stock, Capital Shares Reserved for Future Issuance (in Shares) | 900,000 us-gaap_CommonStockCapitalSharesReservedForFutureIssuance / us-gaap_PlanNameAxis = rusha_EmployeeStockPurchasePlanMember |  |  |  |  |  |  |
Stock Issued During Period, Shares, Employee Stock Purchase Plans (in Shares) | 64,090 us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans / us-gaap_PlanNameAxis = rusha_EmployeeStockPurchasePlanMember | 79,681 us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans / us-gaap_PlanNameAxis = rusha_EmployeeStockPurchasePlanMember |  |  |  |  |  |
Number Of Employees Eligible To Participate In Stock Purchase Plan | 6,297 rusha_NumberOfEmployeesEligibleToParticipateInStockPurchasePlan / us-gaap_PlanNameAxis = rusha_EmployeeStockPurchasePlanMember |  |  |  |  |  |  |
Number Of Employees Participating In Stock Purchase Plan | 837 rusha_NumberOfEmployeesParticipatingInStockPurchasePlan / us-gaap_PlanNameAxis = rusha_EmployeeStockPurchasePlanMember |  |  |  |  |  |  |
The 2006 Non-Employee Director Stock Option Plan [Member] |  |  |  |  |  |  |  |
Note 11 - Share Based Compensation and Employee Benefit Plans (Details) [Line Items] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares) |  |  |  |  |  |  |  | 1,500,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized / us-gaap_PlanNameAxis = rusha_The2006NonemployeeDirectorStockOptionPlanMember
Reduction in Number of Shares Reserved for Issuance (in Shares) |  |  |  |  |  |  | 1,000,000 rusha_ReductionInNumberOfSharesReservedForIssuance / us-gaap_PlanNameAxis = rusha_The2006NonemployeeDirectorStockOptionPlanMember |
Number of Shares Available for Purchase with Options by Non-Employee Director Each Year (in Shares) | 20,000 rusha_NumberOfSharesAvailableForPurchaseWithOptionsByNonemployeeDirectorEachYear / us-gaap_PlanNameAxis = rusha_The2006NonemployeeDirectorStockOptionPlanMember |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period | 10 years |  |  |  |  |  |  |
Amended and Restated 2007 Incentive Plan [Member] |  |  |  |  |  |  |  |
Note 11 - Share Based Compensation and Employee Benefit Plans (Details) [Line Items] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period | 10 years |  |  |  |  |  |  |

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