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Note 11 - Derivatives and Hedging Activities - Fair Value of Outstanding Derivative Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Derivative Assets	$ 251	$ 56
Derivatives Designated as Cash Flow Hedging Instruments [Member] | Foreign Exchange Option Contracts [Member]
Derivative Assets	0	14
Derivatives Designated as Cash Flow Hedging Instruments [Member] | Foreign Exchange Forward Contracts [Member]
Derivative Assets	$ 251	$ 42

X

- Definition

Fair value portion of asset contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward contracts, and swaps.

+ References

No definition available.

+ Details

Name:	us-gaap_ForeignCurrencyContractAssetFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=ceva_DerivativesDesignatedAsCashFlowHedgingInstrumentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=ceva_ForeignExchangeOptionContractsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=ceva_ForeignExchangeForwardContractsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: