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Schedule of Options Granted, Classified into Range of Exercise Price (Detail) (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]    
Outstanding, Number of options 3,316,380ceva_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsOutstandingNumber [1] 3,115,972ceva_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsOutstandingNumber
Outstanding, Weighted average remaining contractual life (years) 4 years 6 months  
Outstanding, Weighted average exercise price $ 16.50ceva_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsOutstandingWeightedAverageExercisePrice  
Exercisable, Number of options 2,031,630ceva_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsExercisableNumber [2]  
Exercisable, Weighted average remaining contractual life (years) 3 years 3 months 18 days  
Exercisable, Weighted average exercise price $ 16.51ceva_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsExercisableWeightedAverageExercisePrice [2]  
5.76-9.80    
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]    
Range of exercise price, Lower limit $ 5.76ceva_ShareBasedCompensationSharesAuthorizedUnderStockOptionAndStockAppreciationRightPlansExercisePriceRangeLowerRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ceva_ExercisePriceRangeOneMember		  
Range of exercise price, Upper limit $ 9.80ceva_ShareBasedCompensationSharesAuthorizedUnderStockOptionAndStockAppreciationRightPlansExercisePriceRangeUpperRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ceva_ExercisePriceRangeOneMember		  
Outstanding, Number of options 599,076ceva_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsOutstandingNumber
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ceva_ExercisePriceRangeOneMember		  
Outstanding, Weighted average remaining contractual life (years) 10 months 24 days  
Outstanding, Weighted average exercise price $ 8.37ceva_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsOutstandingWeightedAverageExercisePrice
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ceva_ExercisePriceRangeOneMember		  
Exercisable, Number of options 599,076ceva_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsExercisableNumber
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ceva_ExercisePriceRangeOneMember		  
Exercisable, Weighted average remaining contractual life (years) 10 months 24 days  
Exercisable, Weighted average exercise price $ 8.37ceva_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsExercisableWeightedAverageExercisePrice
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ceva_ExercisePriceRangeOneMember		  
11.58-15.54    
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]    
Range of exercise price, Lower limit $ 11.58ceva_ShareBasedCompensationSharesAuthorizedUnderStockOptionAndStockAppreciationRightPlansExercisePriceRangeLowerRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ceva_ExercisePriceRangeTwoMember		  
Range of exercise price, Upper limit $ 15.54ceva_ShareBasedCompensationSharesAuthorizedUnderStockOptionAndStockAppreciationRightPlansExercisePriceRangeUpperRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ceva_ExercisePriceRangeTwoMember		  
Outstanding, Number of options 1,074,858ceva_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsOutstandingNumber
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ceva_ExercisePriceRangeTwoMember		  
Outstanding, Weighted average remaining contractual life (years) 5 years 4 months 24 days  
Outstanding, Weighted average exercise price $ 14.76ceva_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsOutstandingWeightedAverageExercisePrice
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ceva_ExercisePriceRangeTwoMember		  
Exercisable, Number of options 461,119ceva_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsExercisableNumber
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ceva_ExercisePriceRangeTwoMember		  
Exercisable, Weighted average remaining contractual life (years) 3 years 10 months 24 days  
Exercisable, Weighted average exercise price $ 14.51ceva_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsExercisableWeightedAverageExercisePrice
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ceva_ExercisePriceRangeTwoMember		  
16.08-17.61    
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]    
Range of exercise price, Lower limit $ 16.08ceva_ShareBasedCompensationSharesAuthorizedUnderStockOptionAndStockAppreciationRightPlansExercisePriceRangeLowerRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ceva_ExercisePriceRangeThreeMember		  
Range of exercise price, Upper limit $ 17.61ceva_ShareBasedCompensationSharesAuthorizedUnderStockOptionAndStockAppreciationRightPlansExercisePriceRangeUpperRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ceva_ExercisePriceRangeThreeMember		  
Outstanding, Number of options 837,156ceva_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsOutstandingNumber
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ceva_ExercisePriceRangeThreeMember		  
Outstanding, Weighted average remaining contractual life (years) 5 years 9 months 18 days  
Outstanding, Weighted average exercise price $ 16.48ceva_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsOutstandingWeightedAverageExercisePrice
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ceva_ExercisePriceRangeThreeMember		  
Exercisable, Number of options 318,821ceva_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsExercisableNumber
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ceva_ExercisePriceRangeThreeMember		  
Exercisable, Weighted average remaining contractual life (years) 5 years 9 months 18 days  
Exercisable, Weighted average exercise price $ 16.50ceva_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsExercisableWeightedAverageExercisePrice
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ceva_ExercisePriceRangeThreeMember		  
18.23-32.34    
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]    
Range of exercise price, Lower limit $ 18.23ceva_ShareBasedCompensationSharesAuthorizedUnderStockOptionAndStockAppreciationRightPlansExercisePriceRangeLowerRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ceva_ExercisePriceRangeFourMember		  
Range of exercise price, Upper limit $ 32.34ceva_ShareBasedCompensationSharesAuthorizedUnderStockOptionAndStockAppreciationRightPlansExercisePriceRangeUpperRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ceva_ExercisePriceRangeFourMember		  
Outstanding, Number of options 805,290ceva_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsOutstandingNumber
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ceva_ExercisePriceRangeFourMember		  
Outstanding, Weighted average remaining contractual life (years) 4 years 6 months  
Outstanding, Weighted average exercise price $ 24.89ceva_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsOutstandingWeightedAverageExercisePrice
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ceva_ExercisePriceRangeFourMember		  
Exercisable, Number of options 652,614ceva_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsExercisableNumber
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ceva_ExercisePriceRangeFourMember		  
Exercisable, Weighted average remaining contractual life (years) 3 years 10 months 24 days  
Exercisable, Weighted average exercise price $ 25.39ceva_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsExercisableWeightedAverageExercisePrice
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= ceva_ExercisePriceRangeFourMember		  
[1] Due to the ceiling imposed on the SAR grants, the outstanding amount equals a maximum of 2,946,669 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 1,894,343 shares of the Company's common stock issuable upon exercise.