Quarterly report pursuant to Section 13 or 15(d)

Significant Accounting Policies - Summary of Property and Equipment (Detail)

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Significant Accounting Policies - Summary of Property and Equipment (Detail) (USD $)
Mar. 31, 2015
Dec. 31, 2014
Property Plant And Equipment Capitalized Interest Costs [Abstract]    
Computer hardware and software $ 18,955crbp_ComputerHardwareAndSoftwareGross $ 17,179crbp_ComputerHardwareAndSoftwareGross
Office furniture and equipment 27,960us-gaap_FurnitureAndFixturesGross 27,960us-gaap_FurnitureAndFixturesGross
Leasehold improvements 19,310us-gaap_LeaseholdImprovementsGross 19,310us-gaap_LeaseholdImprovementsGross
Less: accumulated depreciation (15,825)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment (10,405)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Property and equipment, net $ 50,400us-gaap_PropertyPlantAndEquipmentNet $ 54,044us-gaap_PropertyPlantAndEquipmentNet