Annual report pursuant to Section 13 and 15(d)

Warrants (Details 1)

v2.4.1.9
Warrants (Details 1) (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Expected term (years) 6 years 29 days 6 years 29 days
Cumulative volatility % 108.00%us-gaap_FairValueAssumptionsWeightedAverageVolatilityRate 108.00%us-gaap_FairValueAssumptionsWeightedAverageVolatilityRate
Risk-free rate %   1.11%us-gaap_FairValueAssumptionsRiskFreeInterestRate
Liabilities [Member] | February 2012 warrants [Member]    
Strike price 0.6us-gaap_SharePrice
/ us-gaap_ClassOfWarrantOrRightAxis
= cocp_Warrant4Member
/ us-gaap_StatementEquityComponentsAxis
= cocp_WarrantLiabilitiesMember 		 
Expected term (years) 1 year 2 months 12 days  
Cumulative volatility % 79.00%us-gaap_FairValueAssumptionsWeightedAverageVolatilityRate
/ us-gaap_ClassOfWarrantOrRightAxis
= cocp_Warrant4Member
/ us-gaap_StatementEquityComponentsAxis
= cocp_WarrantLiabilitiesMember 		 
Risk-free rate % 0.25%us-gaap_FairValueAssumptionsRiskFreeInterestRate
/ us-gaap_ClassOfWarrantOrRightAxis
= cocp_Warrant4Member
/ us-gaap_StatementEquityComponentsAxis
= cocp_WarrantLiabilitiesMember 		 
Liabilities [Member] | August 2013 warrants [Member]    
Strike price   0.4us-gaap_SharePrice
/ us-gaap_ClassOfWarrantOrRightAxis
= cocp_Warrant5Member
/ us-gaap_StatementEquityComponentsAxis
= cocp_WarrantLiabilitiesMember
Expected term (years) 8 years 8 months 12 days  
Cumulative volatility % 103.00%us-gaap_FairValueAssumptionsWeightedAverageVolatilityRate
/ us-gaap_ClassOfWarrantOrRightAxis
= cocp_Warrant5Member
/ us-gaap_StatementEquityComponentsAxis
= cocp_WarrantLiabilitiesMember 		 
Risk-free rate % 2.08%us-gaap_FairValueAssumptionsRiskFreeInterestRate
/ us-gaap_ClassOfWarrantOrRightAxis
= cocp_Warrant5Member
/ us-gaap_StatementEquityComponentsAxis
= cocp_WarrantLiabilitiesMember 		 
Liabilities [Member] | October 2013 warrants [Member]    
Strike price 0.5us-gaap_SharePrice
/ us-gaap_ClassOfWarrantOrRightAxis
= cocp_Warrant6Member
/ us-gaap_StatementEquityComponentsAxis
= cocp_WarrantLiabilitiesMember 		 
Expected term (years) 3 years 9 months 18 days  
Cumulative volatility % 81.00%us-gaap_FairValueAssumptionsWeightedAverageVolatilityRate
/ us-gaap_ClassOfWarrantOrRightAxis
= cocp_Warrant6Member
/ us-gaap_StatementEquityComponentsAxis
= cocp_WarrantLiabilitiesMember 		 
Risk-free rate % 1.32%us-gaap_FairValueAssumptionsRiskFreeInterestRate
/ us-gaap_ClassOfWarrantOrRightAxis
= cocp_Warrant6Member
/ us-gaap_StatementEquityComponentsAxis
= cocp_WarrantLiabilitiesMember 		 
Liabilities [Member] | October 2013 Series A warrants [Member]    
Strike price 0.5us-gaap_SharePrice
/ us-gaap_ClassOfWarrantOrRightAxis
= cocp_Warrant7Member
/ us-gaap_StatementEquityComponentsAxis
= cocp_WarrantLiabilitiesMember 		 
Expected term (years) 8 years 9 months 18 days  
Cumulative volatility % 103.00%us-gaap_FairValueAssumptionsWeightedAverageVolatilityRate
/ us-gaap_ClassOfWarrantOrRightAxis
= cocp_Warrant7Member
/ us-gaap_StatementEquityComponentsAxis
= cocp_WarrantLiabilitiesMember 		 
Risk-free rate % 2.09%us-gaap_FairValueAssumptionsRiskFreeInterestRate
/ us-gaap_ClassOfWarrantOrRightAxis
= cocp_Warrant7Member
/ us-gaap_StatementEquityComponentsAxis
= cocp_WarrantLiabilitiesMember 		 
Liabilities [Member] | January 2014 [Member]    
Strike price 0.5us-gaap_SharePrice
/ us-gaap_ClassOfWarrantOrRightAxis
= cocp_Warrant8Member
/ us-gaap_StatementEquityComponentsAxis
= cocp_WarrantLiabilitiesMember 		 
Expected term (years) 9 years 1 month 6 days  
Cumulative volatility % 103.00%us-gaap_FairValueAssumptionsWeightedAverageVolatilityRate
/ us-gaap_ClassOfWarrantOrRightAxis
= cocp_Warrant8Member
/ us-gaap_StatementEquityComponentsAxis
= cocp_WarrantLiabilitiesMember 		 
Risk-free rate % 2.11%us-gaap_FairValueAssumptionsRiskFreeInterestRate
/ us-gaap_ClassOfWarrantOrRightAxis
= cocp_Warrant8Member
/ us-gaap_StatementEquityComponentsAxis
= cocp_WarrantLiabilitiesMember