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SHAREHOLDERS' EQUITY (Board Members And Officers) (Narrative) (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Schedule of Share-based Compensation Arrangements by Grantee [Line Items] |  |  |
Stock-based compensation expenses | $ 3,633 us-gaap_AllocatedShareBasedCompensationExpense | $ 3,543 us-gaap_AllocatedShareBasedCompensationExpense | $ 2,469 us-gaap_AllocatedShareBasedCompensationExpense
Chairman [Member] |  |  |
Schedule of Share-based Compensation Arrangements by Grantee [Line Items] |  |  |
Options granted | 50,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = us-gaap_BoardOfDirectorsChairmanMember | 60,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = us-gaap_BoardOfDirectorsChairmanMember |
Stock options granted, exercise price | $ 10.07 cgen_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodFixedExercisePrice / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = us-gaap_BoardOfDirectorsChairmanMember | $ 5.445 cgen_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 | 348 us-gaap_AllocatedShareBasedCompensationExpense / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = us-gaap_BoardOfDirectorsChairmanMember | 108 us-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 | 100,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = us-gaap_ChiefExecutiveOfficerMember | 120,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = us-gaap_ChiefExecutiveOfficerMember |
Stock options granted, exercise price | $ 10.07 cgen_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodFixedExercisePrice / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = us-gaap_ChiefExecutiveOfficerMember | $ 5.445 cgen_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 | $ 348 us-gaap_AllocatedShareBasedCompensationExpense / cgen_ScheduleOfShareBasedCompensationArrangementsByGranteeAxis = us-gaap_ChiefExecutiveOfficerMember | $ 108 us-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 |

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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F + Details
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- Definition Restrictions on equity-based instruments during the vesting period, such as the inability to transfer unvested awards, are not taken into account in estimating the fair value of the award. However, restrictions that remain in effect after an award is vested, such as the inability to transfer or hedge vested options or a prohibition on the sale of outstanding vested shares (or other type of equity) for a period of time, affect the estimate of an award's fair value. + 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 (f)(2)(v) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. + 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 (f)(2)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Expected term of share-based compensation awards, 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 S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.D.2) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section D -Subsection 2 + Details
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + 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 (f)(2)(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. + 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 (f)(2)(iv) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Gross number of share options (or share units) granted during the period. + References No definition available. + Details
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