Quarterly report pursuant to Section 13 or 15(d)

Common Stock - Additional Information (Detail)

v2.4.1.9
Common Stock - Additional Information (Detail) (USD $)
3 Months Ended
Mar. 31, 2015
Dec. 31, 2014
Mar. 31, 2014
Equity [Abstract]      
Common stock, shares authorized 150,000,000us-gaap_CommonStockSharesAuthorized 150,000,000us-gaap_CommonStockSharesAuthorized 150,000,000us-gaap_CommonStockSharesAuthorized
Common stock, par value $ 0.0001us-gaap_CommonStockParOrStatedValuePerShare $ 0.0001us-gaap_CommonStockParOrStatedValuePerShare $ 0.0001us-gaap_CommonStockParOrStatedValuePerShare
Common stock, shares issued 26,003,304us-gaap_CommonStockSharesIssued 25,938,332us-gaap_CommonStockSharesIssued 25,938,332us-gaap_CommonStockSharesIssued
Common stock, shares outstanding 26,003,304us-gaap_CommonStockSharesOutstanding 25,938,332us-gaap_CommonStockSharesOutstanding 25,938,332us-gaap_CommonStockSharesOutstanding
Net proceeds from common stock $ 62,600us-gaap_ProceedsFromIssuanceOfCommonStock    
Common stock issued upon the exercise of stock options and warrants 64,972crbp_IssuanceOfCommonStockUponExerciseOfOptionsAndWarrants