Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Additional Information (Detail)

v2.4.1.9
Commitments and Contingencies - Additional Information (Detail) (USD $)
12 Months Ended 0 Months Ended 3 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Jul. 19, 2012
Mar. 31, 2014
Aug. 12, 2012
Loss Contingencies [Line Items]            
Discount rates 2.20%us-gaap_FairValueInputsDiscountRate          
Lease rent expense $ 11,100,000us-gaap_LeaseAndRentalExpense $ 9,700,000us-gaap_LeaseAndRentalExpense $ 8,400,000us-gaap_LeaseAndRentalExpense      
Income from subleases 100,000us-gaap_OperatingLeasesIncomeStatementSubleaseRevenue 100,000us-gaap_OperatingLeasesIncomeStatementSubleaseRevenue        
Yardi Law Suit            
Loss Contingencies [Line Items]            
Receipt of claim from primary insurance carrier       5,000,000.0us-gaap_ProceedsFromInsuranceSettlementOperatingActivities
/ us-gaap_LitigationCaseAxis
= rp_YardiLawSuitMember
   
Policy coverage in excess of total coverage by different insurance carrier       5,000,000.0rp_InsurancePolicyCoverageValueInExcessByDifferentInsuranceCarrier
/ us-gaap_LitigationCaseAxis
= rp_YardiLawSuitMember
   
Obligation reimbursement payment           5,000,000.0rp_AssertionByPrimaryInsuranceCarrierNoLongerLiableOfAlreadyPaidAmount
/ us-gaap_LitigationCaseAxis
= rp_YardiLawSuitMember
Settlements and other related costs         $ 4,700,000us-gaap_LitigationSettlementExpense
/ us-gaap_LitigationCaseAxis
= rp_YardiLawSuitMember