Annual report pursuant to Section 13 and 15(d)

Series A Preferred Stock - Additional Information (Detail)

v2.4.1.9
Series A Preferred Stock - Additional Information (Detail) (USD $)
 0 Months Ended 12 Months Ended
Apr. 11, 2014
Dec. 31, 2013
Dec. 31, 2014
Class of Stock [Line Items]      
Convertible preferred stock, shares issued     0us-gaap_PreferredStockSharesIssued
Common Stock [Member]      
Class of Stock [Line Items]      
Conversion of stock, shares issued 2,035,212us-gaap_ConversionOfStockSharesIssued1
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember 		   
Series A Convertible Preferred Stock [Member]      
Class of Stock [Line Items]      
Preferred Stock converted, shares 1,835,212us-gaap_ConversionOfStockSharesConverted1
/ us-gaap_StatementClassOfStockAxis
= crbp_SeriesAConvertiblePreferredStockMember 		   
Convertible preferred stock, shares issued   198,808us-gaap_PreferredStockSharesIssued
/ us-gaap_StatementClassOfStockAxis
= crbp_SeriesAConvertiblePreferredStockMember 		 
Convertible preferred stock, proceeds raised   $ 120,000us-gaap_ProceedsFromIssuanceOfConvertiblePreferredStock
/ us-gaap_StatementClassOfStockAxis
= crbp_SeriesAConvertiblePreferredStockMember 		 
Series A Non-Convertible Preferred Stock [Member]      
Class of Stock [Line Items]      
Preferred Stock converted, shares 200,000us-gaap_ConversionOfStockSharesConverted1
/ us-gaap_StatementClassOfStockAxis
= crbp_SeriesANonConvertiblePreferredStockMember