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Commitments And Contingencies - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Commitment And Contingencies [Line Items] |  |  |
Rent expenses | $ 955 us-gaap_OperatingLeasesRentExpenseNet | $ 839 us-gaap_OperatingLeasesRentExpenseNet | $ 821 us-gaap_OperatingLeasesRentExpenseNet
Chief Scientist of State of Israel |  |  |
Commitment And Contingencies [Line Items] |  |  |
Maximum royalty payment as percentage of grants received | 100.00%ceva_RoyaltyPaymentPercentageAsPercentageOfGrantReceived / us-gaap_LeaseArrangementTypeAxis = ceva_ChiefScientistOfStateOfIsraelMember |  |
Amount of royalties paid | 300 us-gaap_PaymentsForRoyalties / us-gaap_LeaseArrangementTypeAxis = ceva_ChiefScientistOfStateOfIsraelMember | 147 us-gaap_PaymentsForRoyalties / us-gaap_LeaseArrangementTypeAxis = ceva_ChiefScientistOfStateOfIsraelMember | 12 us-gaap_PaymentsForRoyalties / us-gaap_LeaseArrangementTypeAxis = ceva_ChiefScientistOfStateOfIsraelMember
Aggregate contingent royalty liability (including interest) | $ 11,756 us-gaap_AccruedRoyaltiesCurrent / us-gaap_LeaseArrangementTypeAxis = ceva_ChiefScientistOfStateOfIsraelMember |  |
Chief Scientist of State of Israel | Minimum |  |  |
Commitment And Contingencies [Line Items] |  |  |
Percentage of royalties payment to sales of products and other related revenues | 3.00%ceva_CommitmentAndContingencyRoyaltyPaymentPercentage / us-gaap_LeaseArrangementTypeAxis = ceva_ChiefScientistOfStateOfIsraelMember / us-gaap_RangeAxis = us-gaap_MinimumMember |  |
Chief Scientist of State of Israel | Maximum |  |  |
Commitment And Contingencies [Line Items] |  |  |
Percentage of royalties payment to sales of products and other related revenues | 3.50%ceva_CommitmentAndContingencyRoyaltyPaymentPercentage / us-gaap_LeaseArrangementTypeAxis = ceva_ChiefScientistOfStateOfIsraelMember / us-gaap_RangeAxis = us-gaap_MaximumMember |  |

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- Definition Commitment And Contingency Royalty Payment Percentage + References No definition available. + Details
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- Definition Royalty Payment Percentage As Percentage Of Grant Received + References No definition available. + Details
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- Definition Carrying value as of the balance sheet date of obligations incurred through that date and payable for royalties. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Current Liabilities -URI http://asc.fasb.org/extlink&oid=6509677 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6935-107765 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6911-107765 + Details
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- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717 + Details
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- Definition The amount of cash paid for royalties during the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585 + Details
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