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SIGNIFICANT ACCOUNTING POLICIES (Schedule of Depreciation Rates for Property and Equipment) (Details)	12 Months Ended
	Dec. 31, 2017
Laboratory equipment and office furniture [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Annual depreciation rate	6.00%
Laboratory equipment and office furniture [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Annual depreciation rate	20.00%
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Annual depreciation rate	Shorter of the term of the lease or useful life
Computers, software and related equipment [Member]
Property, Plant and Equipment [Line Items]
Annual depreciation rate	33.00%

X

- Definition

Annual Depreciation Rate

+ References

No definition available.

+ Details

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Namespace Prefix:	cgen_
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Balance Type:	na
Period Type:	duration

X

- Definition

Annual Depreciation Rates, Description.

+ References

No definition available.

+ Details

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X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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X

- Details

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X

- Details

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X

- Details

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X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_LeaseholdImprovementsMember
Namespace Prefix:
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Period Type:

X

- Details

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Period Type: