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SHAREHOLDERS' EQUITY (Schedule Of Option Activity) (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013
Employees and Directors [Member] |  |
Number of options |  |
Options outstanding at beginning of year | 5,628,653 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_EmployeesAndDirectorsMember |
Options granted | 1,172,350 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_EmployeesAndDirectorsMember |
Options exercised | (336,289)us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_EmployeesAndDirectorsMember |
Options expired | (756)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_EmployeesAndDirectorsMember |
Options forfeited | (199,588)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_EmployeesAndDirectorsMember |
Options outstanding at end of year | 6,264,370 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_EmployeesAndDirectorsMember | 5,628,653 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_EmployeesAndDirectorsMember
Options vested and expected to vest at end of year | 6,091,709 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_EmployeesAndDirectorsMember |
Exercisable at end of year | 3,243,863 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_EmployeesAndDirectorsMember |
Weighted average exercise price |  |
Options outstanding at beginning of year | $ 3.76 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_EmployeesAndDirectorsMember |
Options granted | $ 8.76 us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_EmployeesAndDirectorsMember |
Options exercised | $ 3.46 us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_EmployeesAndDirectorsMember |
Options expired | $ 3.43 us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_EmployeesAndDirectorsMember |
Options forfeited | $ 6.09 us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_EmployeesAndDirectorsMember |
Options outstanding at end of year | $ 4.64 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_EmployeesAndDirectorsMember | $ 3.76 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_EmployeesAndDirectorsMember
Options vested and expected to vest at end of year | $ 4.59 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_EmployeesAndDirectorsMember |
Exercisable at end of year | $ 3.19 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_EmployeesAndDirectorsMember |
Weighted average remaining contractual life |  |
Options outstanding | 6 years 8 months 26 days | 7 years 25 days
Options vested and expected to vest at end of year | 6 years 8 months 5 days |
Exercisable at end of year | 5 years |
Aggregate intrinsic value |  |
Options outstanding at beginning of year | $ 29,232 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_EmployeesAndDirectorsMember |
Options granted | 63 cgen_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodTotalIntrinsicValue / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_EmployeesAndDirectorsMember |
Options exercised | 2,119 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_EmployeesAndDirectorsMember |
Options expired | 4 cgen_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriodTotalIntrinsicValue / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_EmployeesAndDirectorsMember |
Options forfeited | 545 cgen_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriodTotalIntrinsicValue / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_EmployeesAndDirectorsMember |
Options outstanding at end of year | 23,627 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_EmployeesAndDirectorsMember | 29,232 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_EmployeesAndDirectorsMember
Options vested and expected to vest at end of year | 23,227 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_EmployeesAndDirectorsMember |
Exercisable at end of year | $ 16,668 us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1 / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_EmployeesAndDirectorsMember |
Non-employees [Member] |  |
Number of options |  |
Options outstanding at beginning of year | 416,500 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_NonemployeesMember |
Options granted | 113,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_NonemployeesMember |
Options exercised | (53,000)us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_NonemployeesMember |
Options expired | (8,334)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_NonemployeesMember |
Options forfeited | (1,666)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_NonemployeesMember |
Options outstanding at end of year | 466,500 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_NonemployeesMember | 416,500 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_NonemployeesMember
Options vested and expected to vest at end of year | 466,500 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_NonemployeesMember |
Exercisable at end of year | 392,680 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_NonemployeesMember |
Weighted average exercise price |  |
Options outstanding at beginning of year | $ 5.23 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_NonemployeesMember |
Options granted | $ 8.47 us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_NonemployeesMember |
Options exercised | $ 4.90 us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_NonemployeesMember |
Options expired | $ 5.45 us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_NonemployeesMember |
Options forfeited | $ 5.45 us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_NonemployeesMember |
Options outstanding at end of year | $ 5.71 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_NonemployeesMember | $ 5.23 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_NonemployeesMember
Options vested and expected to vest at end of year | $ 5.71 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_NonemployeesMember |
Exercisable at end of year | $ 6.04 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = cgen_NonemployeesMember |
Weighted average remaining contractual life |  |
Options outstanding | 3 years 9 months | 3 years 7 months 6 days
Options vested and expected to vest at end of year | 3 years 9 months |
Exercisable at end of year | 3 years 6 months 11 days |

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- Definition Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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