Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Additional Information (Details)

v2.4.1.9
Summary of Significant Accounting Policies - Additional Information (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Dec. 31, 2014
Schedule Of Significant Accounting Policies [Line Items]    
Primary sources of revenue 3rp_PrimarySourcesOfRevenue  
Length of Expected Customer Benefit of License Fees Billed at Initial Order Date    
Schedule Of Significant Accounting Policies [Line Items]    
Expected length of time of benefit from license fees 3 years  
United States    
Schedule Of Significant Accounting Policies [Line Items]    
Net long-lived assets 67.6us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= country_US
$ 66.5us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= country_US
International Subsidiaries    
Schedule Of Significant Accounting Policies [Line Items]    
Net long-lived assets 5.5us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= rp_InternationalSubsidiariesMember
$ 6.1us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= rp_InternationalSubsidiariesMember