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Schedule of Purchase Price Allocation to Net Tangible and Intangible Assets Based on their Estimated Fair Values (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Jul. 04, 2014
Business Acquisition [Line Items]        
Goodwill $ 46,612us-gaap_Goodwill $ 36,498us-gaap_Goodwill $ 36,498us-gaap_Goodwill  
RivieraWaves        
Business Acquisition [Line Items]        
Cash and cash equivalents       1,189us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents
/ us-gaap_BusinessAcquisitionAxis
= ceva_RivieraWavesMember
Bank deposits       1,384ceva_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBankDeposits
/ us-gaap_BusinessAcquisitionAxis
= ceva_RivieraWavesMember
Other assets       2,898ceva_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAndNoncurrentOtherAssets
/ us-gaap_BusinessAcquisitionAxis
= ceva_RivieraWavesMember
Intangible assets       6,161us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
/ us-gaap_BusinessAcquisitionAxis
= ceva_RivieraWavesMember
Goodwill       10,114us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= ceva_RivieraWavesMember
Total assets       21,746us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets
/ us-gaap_BusinessAcquisitionAxis
= ceva_RivieraWavesMember
Current liabilities       (2,201)us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities
/ us-gaap_BusinessAcquisitionAxis
= ceva_RivieraWavesMember
Deferred tax liabilities, net       (1,433)us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilitiesNoncurrent
/ us-gaap_BusinessAcquisitionAxis
= ceva_RivieraWavesMember
Total liabilities       (3,634)us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities
/ us-gaap_BusinessAcquisitionAxis
= ceva_RivieraWavesMember
Total       $ 18,112us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet
/ us-gaap_BusinessAcquisitionAxis
= ceva_RivieraWavesMember