Annual report pursuant to Section 13 and 15(d)

Debt - Credit Facility Open September 2014 (Details)

v2.4.1.9
Debt - Credit Facility Open September 2014 (Details) (USD $)
6 Months Ended 9 Months Ended
Jun. 30, 2014
Sep. 30, 2014
Dec. 31, 2014
Dec. 31, 2013
Line of Credit Facility [Line Items]        
Revolving line of credit facility borrowed 25,000,000us-gaap_LineOfCredit   $ 20,000,000us-gaap_LineOfCredit $ 0us-gaap_LineOfCredit
Revolving line of credit facility, available borrowing capacity     180,000,000us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity  
Issuance of letters of credit outstanding, amount     10,000,000us-gaap_LettersOfCreditOutstandingAmount  
Unamortized debt issuance costs     1,300,000us-gaap_UnamortizedDebtIssuanceExpense 300,000us-gaap_UnamortizedDebtIssuanceExpense
Additional borrowing capacity   150,000,000.0rp_LineofCreditFacilityAdditionalBorrowingCapacity    
Interest coverage ratio   3.00rp_DebtInstrumentCovenantInterestCoverageRatio    
Consolidated net coverage ratio following permitted acquisition   3.50us-gaap_RatioOfIndebtednessToNetCapital1    
Permitted Acquisition        
Line of Credit Facility [Line Items]        
Consolidated net coverage ratio following permitted acquisition   3.75us-gaap_RatioOfIndebtednessToNetCapital1
/ us-gaap_BusinessAcquisitionAxis
= rp_PermittedAcquisitionMember
   
Federal Funds Rate        
Line of Credit Facility [Line Items]        
Basis spread on variable rate 0.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_VariableRateAxis
= us-gaap_FederalFundsEffectiveSwapRateMember
     
Prime Rate | Minimum        
Line of Credit Facility [Line Items]        
Basis spread on variable rate 0.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_VariableRateAxis
= us-gaap_PrimeRateMember
     
Prime Rate | Maximum        
Line of Credit Facility [Line Items]        
Basis spread on variable rate 0.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_VariableRateAxis
= us-gaap_PrimeRateMember
     
Revolving Credit Facility        
Line of Credit Facility [Line Items]        
Aggregate principal amount 150,000,000.0us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
200,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
   
Consolidated net coverage ratio following permitted acquisition   3.25us-gaap_RatioOfIndebtednessToNetCapital1
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
   
Revolving Credit Facility | LIBOR | Minimum        
Line of Credit Facility [Line Items]        
Basis spread on variable rate   1.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_VariableRateAxis
= us-gaap_LondonInterbankOfferedRateLIBORMember
   
Revolving Credit Facility | LIBOR | Maximum        
Line of Credit Facility [Line Items]        
Basis spread on variable rate   1.75%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_VariableRateAxis
= us-gaap_LondonInterbankOfferedRateLIBORMember
   
Revolving Credit Facility | Base Rate | Minimum        
Line of Credit Facility [Line Items]        
Basis spread on variable rate   0.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_VariableRateAxis
= us-gaap_BaseRateMember
   
Revolving Credit Facility | Base Rate | Maximum        
Line of Credit Facility [Line Items]        
Basis spread on variable rate   0.75%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_VariableRateAxis
= us-gaap_BaseRateMember
   
Revolving Credit Facility | Federal Funds Rate        
Line of Credit Facility [Line Items]        
Basis spread on variable rate   0.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_VariableRateAxis
= us-gaap_FederalFundsEffectiveSwapRateMember
   
Revolving Credit Facility | One-Month LIBOR        
Line of Credit Facility [Line Items]        
Basis spread on variable rate   1.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_VariableRateAxis
= rp_OneMonthLondonInterbankOfferedRateLIBORMember
   
Standby Letters of Credit        
Line of Credit Facility [Line Items]        
Sub limit for issuance of letters of credit 10,000,000rp_SublimitForIssuanceOfLettersOfCredit
/ us-gaap_CreditFacilityAxis
= us-gaap_StandbyLettersOfCreditMember
10,000,000rp_SublimitForIssuanceOfLettersOfCredit
/ us-gaap_CreditFacilityAxis
= us-gaap_StandbyLettersOfCreditMember
   
Swingline Loan        
Line of Credit Facility [Line Items]        
Sub limit for issuance of letters of credit   20,000,000.0rp_SublimitForIssuanceOfLettersOfCredit
/ us-gaap_CreditFacilityAxis
= rp_SwinglineLoanMember