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Consolidated Statements of Changes In Shareholders' Equity - USD ($)
$ in Thousands
Ordinary shares [Member]
Additional paid-in capital [Member]
Treasury shares [Member]
Retained earnings [Member]
Total
Balance at Dec. 31, 2017 $ 22 $ 51,909 $ (38) $ 88,907 $ 140,800
Balance, shares at Dec. 31, 2017 [1] 7,549,531        
Exercise of options and RSUs [3] [2] 288 288
Exercise of options and RSUs, shares [1],[3] 9,674        
Share-based compensation   2,424     2,424
Net income       14,637 14,637
Balance at Dec. 31, 2018 $ 22 54,621 (38) 103,544 158,149
Balance, shares at Dec. 31, 2018 [1] 7,559,205        
Exercise of options and RSUs [3] [2] 154 154
Exercise of options and RSUs, shares [1],[3] 44,500        
Purchase of treasury shares     (7,971)   (7,971)
Purchase of treasury shares, shares [1] (252,388)        
Share-based compensation   2,355     2,355
Net income       10,236 10,236
Balance at Dec. 31, 2019 $ 22 57,130 (8,009) 113,780 162,923
Balance, shares at Dec. 31, 2019 [1] 7,351,317        
Exercise of options and RSUs [3] [2] 276 276
Exercise of options and RSUs, shares [1],[3] 51,357        
Purchase of treasury shares     (16,798)   (16,798)
Purchase of treasury shares, shares [1] (503,159)        
Share-based compensation   2,711     2,711
Net income       5,725 5,725
Balance at Dec. 31, 2020 $ 22 $ 60,117 $ (24,807) $ 119,505 $ 154,837
Balance, shares at Dec. 31, 2020 [1] 6,899,515        
[1] Net of shares held by Silicom Inc. and Silicom Ltd.
[2] Less than 1 thousand.
[3] Restricted share units (hereinafter - "RSUs")