CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities:
Net income (loss)	$ (819)us-gaap_NetIncomeLoss	$ 6,685us-gaap_NetIncomeLoss	$ 13,685us-gaap_NetIncomeLoss
Adjustments required to reconcile net income (loss) to net cash provided by operating activities:
Depreciation	752us-gaap_Depreciation	670us-gaap_Depreciation	525us-gaap_Depreciation
Amortization of intangible assets	649us-gaap_AmortizationOfIntangibleAssets
Equity-based compensation	5,011us-gaap_ShareBasedCompensation	5,920us-gaap_ShareBasedCompensation	5,083us-gaap_ShareBasedCompensation
Realized gain, net on sale of available-for-sale marketable securities	(6)	(379)	(184)
Amortization of premiums on available-for-sale marketable securities	1,121	1,504	1,267
Unrealized foreign exchange loss (gain)	604	(49)	(21)
Accrued interest on bank deposits	351ceva_AccruedInterestOnBankDeposits	(245)ceva_AccruedInterestOnBankDeposits	(1,842)ceva_AccruedInterestOnBankDeposits
Loss on realization of investment in other company	404
Changes in operating assets and liabilities:
Trade receivables	(2,381)	603	(1,116)
Prepaid expenses and other current assets	819	146	856
Deferred tax, net	2,531ceva_IncreaseDecreaseInDeferredTaxNet	(1,191)ceva_IncreaseDecreaseInDeferredTaxNet	(656)ceva_IncreaseDecreaseInDeferredTaxNet
Trade payables	(655)	(102)	594
Deferred revenues	950	(242)	(209)
Accrued expenses and other payables	(188)	(394)	282
Accretion of contingent consideration	169
Accrued payroll and related benefits	800	568	57
Income taxes payable	(1,057)	207	1,081
Excess tax benefit from equity-based compensation			(672)
Accrued severance pay, net	54	6	(106)
Net cash provided by operating activities	9,109	13,707	18,624
Cash flows from investing activities:
Acquisition of subsidiary, net of cash acquired (Note 1)	(13,489)
Purchase of property and equipment	(1,416)	(894)	(682)
Investment in bank deposits	(51,511)ceva_InvestmentInBankDeposits	(40,190)ceva_InvestmentInBankDeposits	(64,695)ceva_InvestmentInBankDeposits
Proceeds from bank deposits	45,306ceva_ProceedsFromBankDeposits	51,850ceva_ProceedsFromBankDeposits	76,921ceva_ProceedsFromBankDeposits
Investment in available-for-sale marketable securities	(38,413)	(64,760)	(60,863)
Proceeds from maturity of available-for-sale marketable securities	2,033	8,686	14,983
Proceeds from sale of available-for-sale marketable securities	55,566	55,514	45,704
Investments in other companies		(934)	(1,533)
Proceeds from realization of investment in other company	1,032
Net cash provided by (used in) investing activities	(892)	9,272	9,835
Cash flows from financing activities:
Purchase of Treasury Stock	(18,657)	(19,816)	(27,168)
Proceeds from exercise of stock-based awards	2,974	2,479	1,615
Excess tax benefit from equity-based compensation	0	0	672
Net cash used in financing activities	(15,683)	(17,337)	(24,881)
Effect of exchange rate movements on cash	(485)	53	(110)
Increase (decrease) in cash and cash equivalents	(7,951)	5,695	3,468
Cash and cash equivalents at the beginning of the year	24,117	18,422	14,954
Cash and cash equivalents at the end of the year	16,166	24,117	18,422
Cash paid during the year for:
Income and withholding taxes, net of refunds	$ 1,276us-gaap_IncomeTaxesPaidNet	$ 1,851us-gaap_IncomeTaxesPaidNet	$ 926us-gaap_IncomeTaxesPaidNet

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Period Type:	duration

- Definition

The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

+ References

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- Definition

The total cash inflow associated with the amount received from holders to acquire the entity's shares under incentive and share awards, including stock option exercises. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 14

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585

+ Details

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Period Type:	duration

- Definition

The cash inflow associated with the sale or maturity (principal being due) of securities not classified as either held-to-maturity securities or trading securities which are classified as available-for-sale securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 45

-Paragraph 11

-URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26853-111562

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-Subparagraph (a),(b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585

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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- Definition

The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 45

-Paragraph 11

-URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26853-111562

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-Subparagraph (a),(b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585

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- Definition

The cash inflow associated with the sale of other investments not otherwise defined in the taxonomy.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 24

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3521-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 26

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3574-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585

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Balance Type:	debit
Period Type:	duration

- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

+ References

+ Details

Name:	us-gaap_ShareBasedCompensation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration