Annual report pursuant to Section 13 and 15(d)

Notes Payable - Additional Information (Detail)

Notes Payable - Additional Information (Detail) (USD $)	1 Months Ended	12 Months Ended		1 Months Ended
Notes Payable - Additional Information (Detail) (USD $)	Oct. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Aug. 31, 2014	Jun. 30, 2013	Oct. 31, 2009	Apr. 11, 2014
Debt Instrument [Line Items]
Annual interest rate	3.25%
Notes payable		$ 144,389us-gaap_NotesPayable	$ 638,078us-gaap_NotesPayable
Common stock, shares issued		25,938,332us-gaap_CommonStockSharesIssued	6,964,788us-gaap_CommonStockSharesIssued
Number of common stock called by warrants		33,333	301,778	162,539	301,778	27,839
Common stock, term		5 years
Common stock, issued value		2,594us-gaap_CommonStockValue	696us-gaap_CommonStockValue
Estimated fair value of warrants				55,000crbp_FairValueOfWarrantIssued
Gain on the settlement of debt		145,006
Interest expense		24,021us-gaap_InterestExpense	45,114us-gaap_InterestExpense
Proceeds from issuance of notes payable	192,000us-gaap_ProceedsFromNotesPayable	192,000us-gaap_ProceedsFromNotesPayable	7,252us-gaap_ProceedsFromNotesPayable
Principal and interest payable	24,293us-gaap_DebtInstrumentPeriodicPayment
Warrant [Member]
Debt Instrument [Line Items]
Common stock, shares issued		33,333
2014 Private Placement [Member]
Debt Instrument [Line Items]
Common stock, shares issued							6,000,000
Number of common stock called by warrants		10,260,000
Common stock, cost exercisable per share		$ 1.00
2014 Private Placement [Member] \| Common Stock And Warrants [Member]
Debt Instrument [Line Items]
Sale price for one share of common stock and one warrant		$ 1.00
Vendor One [Member]
Debt Instrument [Line Items]
Annual interest rate		7.00%
Settlement agreement, repayment		90,000		631,000
Notes payable				531,000
Accrued interest				93,000
Accounts payable				7,000
Common stock, shares issued		541,948
Number of common stock called by warrants		162,539
Common stock, cost exercisable per share		$ 1.00
Vendor Two [Member]
Debt Instrument [Line Items]
Notes payable		75,244
Number of periodic payments		Four equal monthly principal installments
Principal installment		25,081
Estimate of Fair Value Measurement [Member] \| 2014 Private Placement [Member] \| Common Stock [Member]
Debt Instrument [Line Items]
Estimated fair value per share		$ 0.63
Estimate of Fair Value Measurement [Member] \| 2014 Private Placement [Member] \| Warrant [Member]
Debt Instrument [Line Items]
Estimated fair value per share		$ 0.37
Black Scholes [Member]
Debt Instrument [Line Items]
Common stock, issued value		341,000
Estimated fair value of warrants		$ 55,000
Minimum [Member]
Debt Instrument [Line Items]
Common stock, term	8 months