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SIGNIFICANT ACCOUNTING POLICIES (Schedule of Depreciation Rates for Property and Equipment) (Details)	12 Months Ended
	Dec. 31, 2014
Computers, software and related equipment [Member]
Property, Plant and Equipment [Line Items]
Annual depreciation rate	33.00%cgen_AnnualDepreciationRate / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_ComputerEquipmentMember
Laboratory equipment and office furniture [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Annual depreciation rate	6.00%cgen_AnnualDepreciationRate / us-gaap_PropertyPlantAndEquipmentByTypeAxis = cgen_LaboratoryEquipmentAndOfficeFurnitureMember / us-gaap_RangeAxis = us-gaap_MinimumMember
Laboratory equipment and office furniture [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Annual depreciation rate	20.00%cgen_AnnualDepreciationRate / us-gaap_PropertyPlantAndEquipmentByTypeAxis = cgen_LaboratoryEquipmentAndOfficeFurnitureMember / us-gaap_RangeAxis = us-gaap_MaximumMember
Laboratory equipment and office furniture [Member] | Mainly [Member]
Property, Plant and Equipment [Line Items]
Annual depreciation rate	20.00%cgen_AnnualDepreciationRate / us-gaap_PropertyPlantAndEquipmentByTypeAxis = cgen_LaboratoryEquipmentAndOfficeFurnitureMember / us-gaap_RangeAxis = cgen_MainlyMember
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Annual depreciation rate	Shorter of the term of the lease or useful life

X

- Definition

Annual Depreciation Rate

+ References

No definition available.

+ Details

Name:	cgen_AnnualDepreciationRate
Namespace Prefix:	cgen_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Annual Depreciation Rates, Description.

+ References

No definition available.

+ Details

Name:	cgen_AnnualDepreciationRateDescription
Namespace Prefix:	cgen_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=cgen_LaboratoryEquipmentAndOfficeFurnitureMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_ComputerEquipmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_LeaseholdImprovementsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: