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