Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Additional Information (Detail)

v2.4.1.9
Commitments and Contingencies - Additional Information (Detail) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Commitment And Contingencies [Line Items]    
Terms of lease 3 years  
Standby letters of credit $ 13,728us-gaap_LettersOfCreditOutstandingAmount  
Rent expense $ 35,550us-gaap_LeaseAndRentalExpense $ 0us-gaap_LeaseAndRentalExpense
Norwood, Ma [Member]    
Commitment And Contingencies [Line Items]    
Area of office space 2,387crbp_AreaOfOfficeSpace
/ us-gaap_StatementGeographicalAxis
= crbp_NorwoodMaMember