Quarterly report pursuant to Section 13 or 15(d)

Fair Value of Assets and Liabilities - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail)

v2.4.1.9
Fair Value of Assets and Liabilities - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (USD $)
3 Months Ended
Mar. 31, 2014
Mar. 31, 2015
Dec. 31, 2014
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]      
Derivative warrant liability, Beginning balance     $ 0us-gaap_DerivativeFairValueOfDerivativeLiability
Change in fair value of the derivative warrant liability (1,518)us-gaap_FairValueAdjustmentOfWarrants    
Derivative warrant liability, Ending balance   0us-gaap_DerivativeFairValueOfDerivativeLiability 0us-gaap_DerivativeFairValueOfDerivativeLiability
Fair Value, Measurements, Recurring [Member]      
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]      
Derivative warrant liability, Beginning balance   18,414us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
 
Change in fair value of the derivative warrant liability   1,518us-gaap_FairValueAdjustmentOfWarrants
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
 
Reclassification of derivative warrant liability   0crbp_ReclassificationOfWarrantDerivativeLiability
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
 
Derivative warrant liability, Ending balance   19,932us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
 
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]      
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]      
Reclassification of derivative warrant liability   0crbp_ReclassificationOfWarrantDerivativeLiability
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
 
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]      
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]      
Reclassification of derivative warrant liability   0crbp_ReclassificationOfWarrantDerivativeLiability
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
 
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]      
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]      
Derivative warrant liability, Beginning balance   18,414us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
 
Change in fair value of the derivative warrant liability   1,518us-gaap_FairValueAdjustmentOfWarrants
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
 
Reclassification of derivative warrant liability   0crbp_ReclassificationOfWarrantDerivativeLiability
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
 
Derivative warrant liability, Ending balance   $ 19,932us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember