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Summary of Available-for-Sale Marketable Securities (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
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Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale - matures within one year, Amortized cost | $ 5,443 us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost |
Available-for-sale - matures after one year through three years, Amortized cost | 42,810 ceva_AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughThreeAmortizedCostBasis |
Amortized cost, Total | 48,253 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis | 68,554 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis
Available-for-sale - matures after one year through three years, Gross unrealized gains | 9 ceva_AvailableForSaleMaturesAfterOneYearThroughThreeYearsGrossUnrealizedGains |
Gross unrealized gains, Total | 9 us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax | 140 us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
Available-for-sale - matures after one year through three years, Gross unrealized losses | (383)ceva_AvailableForSaleMaturesAfterOneYearThroughThreeYearsGrossUnrealizedLoss |
Gross unrealized losses, Total | (429)us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax | (230)us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
Available-for-sale - matures after one year through three years, Fair value | 42,436 ceva_AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughThreeFairValue |
Fair value, Total | 47,833 us-gaap_AvailableForSaleSecuritiesDebtSecurities | 68,464 us-gaap_AvailableForSaleSecuritiesDebtSecurities
Available-for-sale - matures within one year, Gross unrealized losses | (46)ceva_AvailableForSaleMaturesWithinOneYearGrossUnrealizedLoss |
Available-for-sale - matures within one year, Fair value | 5,397 us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue |
Corporate bonds |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale - matures within one year, Amortized cost | 5,443 us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember | 2,852 us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember
Available-for-sale - matures after one year through three years, Amortized cost | 40,835 ceva_AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughThreeAmortizedCostBasis / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember | 65,702 ceva_AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughThreeAmortizedCostBasis / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember
Available-for-sale - matures after one year through three years, Gross unrealized gains | 9 ceva_AvailableForSaleMaturesAfterOneYearThroughThreeYearsGrossUnrealizedGains / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember | 134 ceva_AvailableForSaleMaturesAfterOneYearThroughThreeYearsGrossUnrealizedGains / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember
Available-for-sale - matures after one year through three years, Gross unrealized losses | (383)ceva_AvailableForSaleMaturesAfterOneYearThroughThreeYearsGrossUnrealizedLoss / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember | (227)ceva_AvailableForSaleMaturesAfterOneYearThroughThreeYearsGrossUnrealizedLoss / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember
Available-for-sale - matures after one year through three years, Fair value | 40,461 ceva_AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughThreeFairValue / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember | 65,609 ceva_AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughThreeFairValue / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember
Available-for-sale - matures within one year, Gross unrealized gains |  | 6 ceva_AvailableForSaleMaturesWithinOneYearGrossUnrealizedGains / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember
Available-for-sale - matures within one year, Gross unrealized losses | (46)ceva_AvailableForSaleMaturesWithinOneYearGrossUnrealizedLoss / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember | (3)ceva_AvailableForSaleMaturesWithinOneYearGrossUnrealizedLoss / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember
Available-for-sale - matures within one year, Fair value | 5,397 us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember | 2,855 us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember
Certificates of deposits |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale - matures after one year through three years, Amortized cost | 1,975 ceva_AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughThreeAmortizedCostBasis / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CertificatesOfDepositMember |
Available-for-sale - matures after one year through three years, Fair value | $ 1,975 ceva_AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughThreeFairValue / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CertificatesOfDepositMember |

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- Definition Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 + Details
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- Definition This item represents the cost of debt securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 + Details
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- Definition Amount after adjustments of available-for-sale debt securities at cost, maturing in the next fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings less cumulative-effect adjustments, and fair value hedge accounting adjustments. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27198-111563 + Details
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