Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Details Textual)

v2.4.1.9
Stockholders' Equity (Details Textual) (USD $)
3 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 0 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Mar. 31, 2015
Dec. 31, 2014
Jan. 31, 2015
Jan. 06, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross 786,696us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross          
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price $ 1.00us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice          
Common Stock, Shares Authorized 75,000,000us-gaap_CommonStockSharesAuthorized   75,000,000us-gaap_CommonStockSharesAuthorized 75,000,000us-gaap_CommonStockSharesAuthorized    
Common Stock, Par or Stated Value Per Share $ 0.001us-gaap_CommonStockParOrStatedValuePerShare   $ 0.001us-gaap_CommonStockParOrStatedValuePerShare $ 0.001us-gaap_CommonStockParOrStatedValuePerShare    
Preferred Stock, Shares Authorized 5,000,000us-gaap_PreferredStockSharesAuthorized   5,000,000us-gaap_PreferredStockSharesAuthorized 5,000,000us-gaap_PreferredStockSharesAuthorized    
Preferred Stock, Par or Stated Value Per Share $ 0.001us-gaap_PreferredStockParOrStatedValuePerShare   $ 0.001us-gaap_PreferredStockParOrStatedValuePerShare $ 0.001us-gaap_PreferredStockParOrStatedValuePerShare    
Equity Incentive Plan Description In accordance with the rules of the TSX Venture Exchange regarding equity incentive plans, the number of shares that can be reserved for issuance under the 2011 Plan is equal to 20% of the Companys common stock outstanding at the completion of the offering.          
Common Stock, Capital Shares Reserved for Future Issuance 3,843,258us-gaap_CommonStockCapitalSharesReservedForFutureIssuance   3,843,258us-gaap_CommonStockCapitalSharesReservedForFutureIssuance      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value $ 0.38us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue          
Share-based Compensation $ 145,514us-gaap_ShareBasedCompensation $ 362us-gaap_ShareBasedCompensation        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period 55,548us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised          
Proceeds from Stock Options Exercised 55,548us-gaap_ProceedsFromStockOptionsExercised 0us-gaap_ProceedsFromStockOptionsExercised        
Two Agent [Member]            
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period     55,548us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
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Proceeds from Stock Options Exercised     55,548us-gaap_ProceedsFromStockOptionsExercised
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Employee Stock Option [Member]            
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross       127,532us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_OptionIndexedToIssuersEquityEquityAxis
= us-gaap_EmployeeStockOptionMember
   
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price       $ 0.26us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
/ us-gaap_OptionIndexedToIssuersEquityEquityAxis
= us-gaap_EmployeeStockOptionMember
   
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value       $ 0.87us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
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Payments of Stock Issuance Costs 39,201us-gaap_PaymentsOfStockIssuanceCosts
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Compensation Options [Member]            
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross         786,696us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_OptionIndexedToIssuersEquityEquityAxis
= cobu_CompensationOptionsMember
 
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price         $ 1.00us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
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Class of Warrant or Right, Title of Security Warrants or Rights Outstanding         The Compensation Options expire on July 6, 2016. Each whole warrant issuable upon exercise of Compensation Options is exercisable to acquire one share of common stock at an exercise price of $2.00 per share at any time up to January 6, 2017, subject to the Companys right to accelerate the expiration time of the warrants if at any time the volume-weighted average trading price of its common stock is equal to or exceeds $3.00 per share for twenty (20) consecutive trading days.  
Common Stock [Member]            
Conversion of Stock, Shares Issued           5,400,000us-gaap_ConversionOfStockSharesIssued1
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Warrant [Member]            
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number 7,936,391us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
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  7,936,391us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
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Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Exercise Price $ 1.80cobu_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedExercisePrice
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  $ 1.80cobu_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedExercisePrice
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= us-gaap_WarrantMember
     
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms 2 years 7 months 6 days          
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding 1,038,575us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding
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= us-gaap_WarrantMember
  1,038,575us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding
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= us-gaap_WarrantMember
     
Amendment [Member]            
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized         80,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
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Common Stock, Shares Authorized         75,000,000us-gaap_CommonStockSharesAuthorized
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Common Stock, Par or Stated Value Per Share         $ 0.001us-gaap_CommonStockParOrStatedValuePerShare
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= cobu_AmendmentMember
 
Preferred Stock, Shares Authorized         5,000,000us-gaap_PreferredStockSharesAuthorized
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= cobu_AmendmentMember
 
Preferred Stock, Par or Stated Value Per Share         $ 0.001us-gaap_PreferredStockParOrStatedValuePerShare
/ cobu_AmendmentAxis
= cobu_AmendmentMember
 
IPO and Private Placement [Member]            
Warrants To Purchase Common Stock         6,975,000cobu_WarrantsToPurchaseCommonStock
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Proceeds from Issuance or Sale of Equity         13,950,000us-gaap_ProceedsFromIssuanceOrSaleOfEquity
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Stock Issued During Period, Shares, New Issues         13,950,000us-gaap_StockIssuedDuringPeriodSharesNewIssues
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Class of Warrant or Right, Title of Security Warrants or Rights Outstanding         Each whole warrant is exercisable to acquire one share of CohBar's common stock at a price of $2.00 per share at any time up to January 6, 2017, subject to CohBar's right to accelerate the expiration time of the warrants if at any time the volume-weighted average trading price of its common stock is equal to or exceeds $3.00 per share for twenty (20) consecutive trading days.  
Proceeds from Debt, Net of Issuance Costs         12,953,484us-gaap_ProceedsFromDebtNetOfIssuanceCosts
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IPO [Member]            
Class Of Warrant Or Rights Issued During Period         11,250,000cobu_ClassOfWarrantOrRightsIssuedDuringPeriod
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Share Price $ 1.00us-gaap_SharePrice
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_IPOMember
  $ 1.00us-gaap_SharePrice
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_IPOMember
  $ 1.00us-gaap_SharePrice
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= us-gaap_IPOMember
 
Proceeds from Issuance of Warrants         11,250,000us-gaap_ProceedsFromIssuanceOfWarrants
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= us-gaap_IPOMember
 
Stock Issued During Period, Shares, New Issues         11,250,000us-gaap_StockIssuedDuringPeriodSharesNewIssues
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Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross         786,696us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
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Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price         $ 1.00us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
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Common Stock, Capital Shares Reserved for Future Issuance         6,453,069us-gaap_CommonStockCapitalSharesReservedForFutureIssuance
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= us-gaap_IPOMember
 
Private Placement [Member]            
Class Of Warrant Or Rights Issued During Period         2,700,000cobu_ClassOfWarrantOrRightsIssuedDuringPeriod
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= us-gaap_PrivatePlacementMember
 
Proceeds from Issuance of Warrants         $ 2,700,000us-gaap_ProceedsFromIssuanceOfWarrants
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= us-gaap_PrivatePlacementMember
 
Stock Issued During Period, Shares, New Issues         2,700,000us-gaap_StockIssuedDuringPeriodSharesNewIssues
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Series B Preferred Stock [Member]            
Conversion of Stock, Shares Converted           5,400,000us-gaap_ConversionOfStockSharesConverted1
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