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Note 1 - Organization and Significant Accounting Policies - Annual Depreciation Rates of Property, Plant and Equipment (Details)	Dec. 31, 2019
Minimum [Member] | Computers, Software and Equipment [Member]
Computers, software and equipment	10.00%
Minimum [Member] | Office Furniture and Equipment [Member]
Computers, software and equipment	7.00%
Minimum [Member] | Leasehold Improvements [Member]
Computers, software and equipment	10.00%
Maximum [Member] | Computers, Software and Equipment [Member]
Computers, software and equipment	33.00%
Maximum [Member] | Office Furniture and Equipment [Member]
Computers, software and equipment	33.00%
Maximum [Member] | Leasehold Improvements [Member]
Computers, software and equipment	25.00%

X

- Definition

Represents the annual depreciation rate for property, plant and equipment.

+ References

No definition available.

+ Details

Name:	ceva_AnnualDepreciationRate
Namespace Prefix:	ceva_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=ceva_OfficeFurnitureAndEquipmentMember
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:

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: