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STOCK-BASED COMPENSATION (Detail Textuals) (2014 Stock Incentive Plan)
1 Months Ended
Apr. 22, 2014
Mar. 31, 2015
2014 Stock Incentive Plan
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Reserved shares of common stock 8,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= res_StockIncentivePlanTwoThousandFourteenMember
 
Term of reserved shares 10 years  
Shares available for grant   7,106,275us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_PlanNameAxis
= res_StockIncentivePlanTwoThousandFourteenMember