Quarterly report pursuant to Section 13 or 15(d)

Stock-based Compensation (Details)

v2.4.1.9
Stock-based Compensation (Details) (USD $)
1 Months Ended 3 Months Ended
Mar. 31, 2015
Feb. 28, 2015
Mar. 31, 2015
2010 Equity Incentive Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 3 years    
2010 Equity Incentive Plan | Stock options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Granted options 1,748,890us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= rp_A2010EquityIncentivePlanMember
   
Exercise price (in dollars per share) 19.76us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= rp_A2010EquityIncentivePlanMember
   
2010 Equity Incentive Plan | Restricted Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Granted shares of restricted stock 466,266us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_PlanNameAxis
= rp_A2010EquityIncentivePlanMember
582,710us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_PlanNameAxis
= rp_A2010EquityIncentivePlanMember
 
Vesting condition 1 | Restricted Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Granted shares of restricted stock     30,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_VestingAxis
= us-gaap_ShareBasedCompensationAwardTrancheOneMember
Number of consecutive trading days required to calculate average price per share     20 days
Minimum price per common stock for vesting eligibility     $ 25.00rp_SharebasedCompensationArrangementbySharebasedPaymentAwardAwardVestingCriteriaMinimumPricePerShare
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_VestingAxis
= us-gaap_ShareBasedCompensationAwardTrancheOneMember
Vesting condition 2 | Restricted Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Granted shares of restricted stock     30,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_VestingAxis
= us-gaap_ShareBasedCompensationAwardTrancheTwoMember
Number of consecutive trading days required to calculate average price per share     20 days
Minimum price per common stock for vesting eligibility     $ 30.00rp_SharebasedCompensationArrangementbySharebasedPaymentAwardAwardVestingCriteriaMinimumPricePerShare
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_VestingAxis
= us-gaap_ShareBasedCompensationAwardTrancheTwoMember
Vesting condition 3 | Restricted Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Granted shares of restricted stock     231,355us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_VestingAxis
= us-gaap_ShareBasedCompensationAwardTrancheThreeMember
Number of consecutive trading days required to calculate average price per share     20 days
Minimum price per common stock for vesting eligibility     $ 30.00rp_SharebasedCompensationArrangementbySharebasedPaymentAwardAwardVestingCriteriaMinimumPricePerShare
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_VestingAxis
= us-gaap_ShareBasedCompensationAwardTrancheThreeMember
Vesting condition 3 | 2010 Equity Incentive Plan | Restricted Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting percentage   25.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_PlanNameAxis
= rp_A2010EquityIncentivePlanMember
/ us-gaap_VestingAxis
= us-gaap_ShareBasedCompensationAwardTrancheThreeMember
 
Vesting condition 4 | Restricted Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Granted shares of restricted stock     261,355us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_VestingAxis
= rp_SharebasedCompensationAwardTrancheFourMember
Number of consecutive trading days required to calculate average price per share     20 days
Minimum price per common stock for vesting eligibility     $ 35.00rp_SharebasedCompensationArrangementbySharebasedPaymentAwardAwardVestingCriteriaMinimumPricePerShare
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_VestingAxis
= rp_SharebasedCompensationAwardTrancheFourMember
Vesting condition 5 | Restricted Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Granted shares of restricted stock     30,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_VestingAxis
= rp_SharebasedCompensationAwardTrancheFiveMember
Number of consecutive trading days required to calculate average price per share     20 days
Minimum price per common stock for vesting eligibility     $ 40.00rp_SharebasedCompensationArrangementbySharebasedPaymentAwardAwardVestingCriteriaMinimumPricePerShare
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_VestingAxis
= rp_SharebasedCompensationAwardTrancheFiveMember
April 2015 | 2010 Equity Incentive Plan | Stock options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Granted options     162,695us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= rp_A2010EquityIncentivePlanMember
/ us-gaap_VestingAxis
= rp_April2015Member
July 2015 | 2010 Equity Incentive Plan | Stock options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Granted options     162,695us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= rp_A2010EquityIncentivePlanMember
/ us-gaap_VestingAxis
= rp_July2015Member