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Commitments and Contingencies (Details) (USD $)
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Commitments And Contingencies Disclosure [Line Items]    
Rent expense $ 212,181us-gaap_OperatingLeasesRentExpenseNet $ 212,181us-gaap_OperatingLeasesRentExpenseNet
California State [Member]    
Commitments And Contingencies Disclosure [Line Items]    
Operating leases, space 27,446rgdx_Officeareaunderlease
/ us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis
= rgdx_CaliforniaStateMember
 
Operating lease expiration date Jun. 30, 2016