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Summary of Stock Option Activity (Parenthetical) (Detail)
 3 Months Ended
Mar. 31, 2015
Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Outstanding amount of stock appreciation right units 2,880,480ceva_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsOutstandingNumber [1] 3,316,380ceva_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsOutstandingNumber
Exercisable amount of stock appreciation right units 1,690,821ceva_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsExercisableNumber [2]  
Maximum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Outstanding amount of stock appreciation right units 2,524,973ceva_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsOutstandingNumber
/ us-gaap_RangeAxis
= us-gaap_MaximumMember		  
Exercisable amount of stock appreciation right units 1,548,456ceva_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsExercisableNumber
/ us-gaap_RangeAxis
= us-gaap_MaximumMember		  
Maximum | Stock Appreciation Rights (SARs)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Maximum percentage of stock appreciation right units 75.00%ceva_PercentageOfStockAppreciationRightsUnitsSubjectToGrant
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember		  
[1] Due to the ceiling imposed on the SAR grants, the outstanding amount equals a maximum of 2,524,973 shares of the Company's common stock issuable upon exercise.
[2] Due to the ceiling imposed on the SAR grants, the exercisable amount equals a maximum of 1,548,456 shares of the Company's common stock issuable upon exercise.