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Commitments And Contingencies (Narrative) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Loss Contingencies [Line Items] |  |  |
Percent of royalties paid must equal the dollar linked amount of the grants received | 100.00% |  |
Total commitment in respect of royalty-bearing participations | $ 2,960 | $ 2,960 |
Rental expenses under the lease agreements | 676 | 632 | 542
Line of credit | $ 161 |  |
Minimum [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Royalty rates | 2.00% |  |
Maximum [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Royalty rates | 5.00% |  |
Silicom Research And Development [Member] | Minimum [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Royalty rates | 2.00% |  |
Silicom Research And Development [Member] | Maximum [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Royalty rates | 3.50% |  |
July 1, 1997 - January 31, 2000 Project [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Royalty rates | 4.00% |  |

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- Definition Percent of royalties paid which must equal the dollar linked amount of the grants received + References No definition available. + Details
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Period Type: | duration

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- Definition Royalty Rates + References No definition available. + Details
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Balance Type: | na
Period Type: | instant

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- Definition Rental expense incurred for leased assets including furniture and equipment which has not been recognized in costs and expenses applicable to sales and revenues; for example, cost of goods sold or other operating costs and expenses. + References No definition available. + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 2, 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Details
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- Definition The amount the entity has committed to make for future royalty guarantees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 928 -SubTopic 440 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6473578&loc=d3e63223-108013 + Details
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