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Acquisitions (Details) - USD ($) $ in Thousands |  |  | 1 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Oct. 28, 2015 | Dec. 10, 2014 | Apr. 15, 2016 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2015
Business Acquisition [Line Items] |  |  |  |  |  |
Purchase price allocated to goodwill |  |  |  | $ 25,561 | $ 25,561 |
Silicom Denmark [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Aggregate purchase price in cash |  | $ 10,161 |  |  |  |
Contingent consideration |  | $ 4,683 |  |  |  |
Total obligation the company paid |  |  |  |  |  | $ 1,463
Percentage of contingent consideration paid in cash |  |  |  |  |  | 90.00%
Percentage of contingent consideration paid in options to ordinary shares |  |  |  |  |  | 10.00%
Aggregate options granted |  |  | 22,795 |  |  |
ADI Engineering, Inc. [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Aggregate purchase price in cash | $ 10,000 |  |  |  |  |
Contingent consideration | 7,802 |  |  |  |  |
Total purchase price | 17,802 |  |  |  |  |
Purchase price allocated to tangible assets | 222 |  |  |  |  |
Purchase price allocated to intangibles assets | 4,261 |  |  |  |  |
Purchase price allocated to goodwill | $ 13,319 |  |  |  |  |

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