Quarterly report pursuant to Section 13 or 15(d)

Notes Payable - Additional Information (Detail)

v2.4.1.9
Notes Payable - Additional Information (Detail) (USD $)
1 Months Ended 3 Months Ended
Oct. 31, 2014
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2013
Equity Method Investments And Cost Method Investments [Abstract]        
Proceeds from issuance of notes payable $ 192,000us-gaap_ProceedsFromNotesPayable      
Principal and interest payable 24,293us-gaap_DebtInstrumentPeriodicPayment      
Annual interest rate 3.25%us-gaap_DebtInstrumentInterestRateStatedPercentage     7.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
Term of loan 8 months      
Interest expense   $ 979us-gaap_InterestExpense $ 11,163us-gaap_InterestExpense  
Imputed interest cost     7.00%crbp_DebtInstrumentImputedInterestRate