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SHAREHOLDERS' EQUITY (Board Members And Officers) (Narrative) (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Schedule of Share-based Compensation Arrangements by Grantee [Line Items]      
Stock-based compensation expenses $ 3,633us-gaap_AllocatedShareBasedCompensationExpense $ 3,543us-gaap_AllocatedShareBasedCompensationExpense $ 2,469us-gaap_AllocatedShareBasedCompensationExpense
Chairman [Member]      
Schedule of Share-based Compensation Arrangements by Grantee [Line Items]      
Options granted 50,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis
= us-gaap_BoardOfDirectorsChairmanMember
60,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis
= us-gaap_BoardOfDirectorsChairmanMember
 
Stock options granted, exercise price $ 10.07cgen_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodFixedExercisePrice
/ cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis
= us-gaap_BoardOfDirectorsChairmanMember
$ 5.445cgen_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodFixedExercisePrice
/ cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis
= us-gaap_BoardOfDirectorsChairmanMember
 
Vesting period 12 months 12 months  
Risk-free interest rate   2.96%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis
= us-gaap_BoardOfDirectorsChairmanMember
 
Dividend yield   0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
/ cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis
= us-gaap_BoardOfDirectorsChairmanMember
 
Volatility   70.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis
= us-gaap_BoardOfDirectorsChairmanMember
 
Post-vesting termination rate   0.51%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsDiscountForPostvestingRestrictions
/ cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis
= us-gaap_BoardOfDirectorsChairmanMember
 
Stock-based compensation expenses 348us-gaap_AllocatedShareBasedCompensationExpense
/ cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis
= us-gaap_BoardOfDirectorsChairmanMember
108us-gaap_AllocatedShareBasedCompensationExpense
/ cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis
= us-gaap_BoardOfDirectorsChairmanMember
 
Chairman [Member] | Minimum [Member]      
Schedule of Share-based Compensation Arrangements by Grantee [Line Items]      
Suboptimal exercise factor   1.00%cgen_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsSuboptimalExerciseFactor
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis
= us-gaap_BoardOfDirectorsChairmanMember
 
Expected term   3 years 9 months 11 days  
Chairman [Member] | Maximum [Member]      
Schedule of Share-based Compensation Arrangements by Grantee [Line Items]      
Suboptimal exercise factor   2.11%cgen_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsSuboptimalExerciseFactor
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis
= us-gaap_BoardOfDirectorsChairmanMember
 
Expected term   5 years 5 months 16 days  
CEO [Member]      
Schedule of Share-based Compensation Arrangements by Grantee [Line Items]      
Options granted 100,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis
= us-gaap_ChiefExecutiveOfficerMember
120,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis
= us-gaap_ChiefExecutiveOfficerMember
 
Stock options granted, exercise price $ 10.07cgen_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodFixedExercisePrice
/ cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis
= us-gaap_ChiefExecutiveOfficerMember
$ 5.445cgen_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodFixedExercisePrice
/ cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis
= us-gaap_ChiefExecutiveOfficerMember
 
Vesting period 12 months 12 months  
Risk-free interest rate   2.96%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis
= us-gaap_ChiefExecutiveOfficerMember
 
Dividend yield   0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
/ cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis
= us-gaap_ChiefExecutiveOfficerMember
 
Volatility   70.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis
= us-gaap_ChiefExecutiveOfficerMember
 
Post-vesting termination rate   0.51%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsDiscountForPostvestingRestrictions
/ cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis
= us-gaap_ChiefExecutiveOfficerMember
 
Stock-based compensation expenses $ 348us-gaap_AllocatedShareBasedCompensationExpense
/ cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis
= us-gaap_ChiefExecutiveOfficerMember
$ 108us-gaap_AllocatedShareBasedCompensationExpense
/ cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis
= us-gaap_ChiefExecutiveOfficerMember
 
CEO [Member] | Minimum [Member]      
Schedule of Share-based Compensation Arrangements by Grantee [Line Items]      
Suboptimal exercise factor   1.00%cgen_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsSuboptimalExerciseFactor
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis
= us-gaap_ChiefExecutiveOfficerMember
 
Expected term   3 years 9 months 11 days  
CEO [Member] | Maximum [Member]      
Schedule of Share-based Compensation Arrangements by Grantee [Line Items]      
Suboptimal exercise factor   2.11%cgen_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsSuboptimalExerciseFactor
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis
= us-gaap_ChiefExecutiveOfficerMember
 
Expected term   5 years 5 months 16 days