Quarterly report pursuant to Section 13 or 15(d)

Income Taxes - Additional Information (Details)

v2.4.1.9
Income Taxes - Additional Information (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 12 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Income Tax Disclosure [Abstract]      
Effective income tax rate 51.40%us-gaap_EffectiveIncomeTaxRateContinuingOperations 37.90%us-gaap_EffectiveIncomeTaxRateContinuingOperations  
Increase (decrease) in NOL deferred tax asset     $ (1.0)rp_IncreaseDecreaseinDeferredTaxAssetNetOperatingLossCarryforward