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Share-Based Compensation (Details) (USD $)
In Millions, except Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based compensation expense $ 2.3us-gaap_AllocatedShareBasedCompensationExpense $ 1.5us-gaap_AllocatedShareBasedCompensationExpense $ 0.7us-gaap_AllocatedShareBasedCompensationExpense
Income tax benefit recognized 0.9us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense 0.6us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense 0.3us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
Options exercisable 555,101us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber 855,817us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber 1,563,725us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
Exercisable options, weighted average exercise price $ 14.92us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice    
Exercisable options, contractual term 1 year 8 months 12 days    
Exercisable options, intrinsic value $ 8.43rrts_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableIntrinsicValuePerShare    
2010 Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Authorized shares under the plan 2,500,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= rrts_IncentiveCompensationPlan2010PlanMember
   
Equity Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expiration period 10 years    
Equity Plan | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 2 years    
Equity Plan | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 4 years    
GTS Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expiration period 10 years    
GTS Plan | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 2 years    
GTS Plan | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 4 years    
Restricted stock units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total unrecognized compensation cost $ 5.7us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_StatementClassOfStockAxis
= us-gaap_RestrictedStockUnitsRSUMember
$ 4.9us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_StatementClassOfStockAxis
= us-gaap_RestrictedStockUnitsRSUMember
 
Restricted stock units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Weighted Average Remaining Contractual Terms 2 years 6 months 0 days 2 years 9 months 0 days 2 years 9 months 7 days
Restricted stock units outstanding 332,136us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
279,471us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
142,248us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
Restricted stock units | 2010 Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 4 years