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Acquisition of Fiberblaze (Narrative) (Details) (USD $) In Thousands, unless otherwise specified | 0 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 10, 2014 | Dec. 31, 2014 | Dec. 31, 2013
Business Acquisition [Line Items] |  |  |
Fair value of contingent consideration |  | $ 4,728us-gaap_BusinessCombinationContingentConsiderationLiabilityCurrent | $ 0us-gaap_BusinessCombinationContingentConsiderationLiabilityCurrent
Fiberblaze [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Additional milestones-based contingent consideration payment in cash (as a percent) | 90.00%silc_BusinessCombinationContingentConsiderationArrangementsCashPaymentPercentage / us-gaap_BusinessAcquisitionAxis = silc_FiberblazeMember |  |
Additional milestones-based contingent consideration payment in options to ordinary shares (as a percent) | 10.00%silc_BusinessCombinationContingentConsiderationArrangementsOptionsToOrdinarySharesPaymentPercentage / us-gaap_BusinessAcquisitionAxis = silc_FiberblazeMember |  |
Contingent consideration discount rate (as a percent) | 18.00%silc_BusinessCombinationContingentConsiderationDiscountRate / us-gaap_BusinessAcquisitionAxis = silc_FiberblazeMember |  |
Acquisition-related expenses |  | 217us-gaap_BusinessCombinationAcquisitionRelatedCosts / us-gaap_BusinessAcquisitionAxis = silc_FiberblazeMember |
Fiberblaze [Member] | Stock options [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Number of equal tranches to vest |  | 3silc_NumberOfEqualTranchesToVest / us-gaap_BusinessAcquisitionAxis = silc_FiberblazeMember / us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTypeOfDeferredCompensationAxis = us-gaap_EmployeeStockOptionMember |
Vesting period |  | 3 years |
Milestone, end of period |  | Aug. 31, 2015 |
Fiberblaze [Member] | First tranche [Member] | Stock options [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Vesting period |  | 1 year |
Fiberblaze [Member] | Share purchase agreement of future performance milestones relating to revenues [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Fair value of contingent consideration |  | 3,833us-gaap_BusinessCombinationContingentConsiderationLiabilityCurrent / us-gaap_BusinessAcquisitionAxis = silc_FiberblazeMember / us-gaap_TypeOfArrangementAxis = silc_SharePurchaseAgreementFuturePerformanceMilestonesRelatingToRevenuesMember |
Fiberblaze [Member] | Share purchase agreement of future performance milestones relating to achievement of design wins [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Fair value of contingent consideration |  | $ 895us-gaap_BusinessCombinationContingentConsiderationLiabilityCurrent / us-gaap_BusinessAcquisitionAxis = silc_FiberblazeMember / us-gaap_TypeOfArrangementAxis = silc_SharePurchaseAgreementFuturePerformanceMilestonesRelatingToAchievementOfDesignWinsMember |

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- Definition Represents information pertaining to additional milestones-based contingent consideration payment in options to ordinary shares in terms of percentage. + References No definition available. + Details
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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=34752592&loc=d3e1043-128460 + Details
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- Definition Amount of liability recognized arising from contingent consideration in a business combination, expected to be settled within one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 35 -Paragraph 1 -Subparagraph b -URI http://asc.fasb.org/extlink&oid=6911338&loc=d3e6819-128478 + Details
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- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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