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Summary of Stock Option Activity (Parenthetical) (Detail) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of shares, Granted | 325,500 ceva_ShareBasedCompensationArrangementByShareBasedPaymentAwardStockAppreciationRightsGrantsInPeriod |  |
Outstanding amount of stock appreciation right units | 3,316,380 ceva_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsOutstandingNumber | [1] | 3,115,972 ceva_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsOutstandingNumber
Exercisable amount of stock appreciation right units | 2,031,630 ceva_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsExercisableNumber | [2] |
Maximum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Outstanding amount of stock appreciation right units | 2,946,669 ceva_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsOutstandingNumber / us-gaap_RangeAxis = us-gaap_MaximumMember |  |
Exercisable amount of stock appreciation right units | 1,894,343 ceva_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 2,946,669 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.

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