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Summary of Significant Accounting Policies (Computation of Basic and Diluted Income Per Ordinary Share) (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Accounting Policies [Abstract]      
Net income attributable to ordinary shares (US$ thousands) $ 18,306 $ 10,541 $ 5,725
Weighted average number of ordinary shares outstanding used in basic income per ordinary share calculation 6,696,671 6,825,630 7,118,244
Add of outstanding dilutive potential ordinary shares 99,748 143,172 38,519
Weighted average number of ordinary shares outstanding used in diluted income per ordinary share calculation 6,796,419 6,968,802 7,156,763
Basic income per ordinary shares (US$) $ 2.733 $ 1.544 $ 0.804
Diluted income per ordinary shares (US$) $ 2.694 $ 1.513 $ 0.8
Weighted average number of shares related to options and RSUs excluded from the diluted earnings per share calculation because of anti-dilutive effect 251,868 65,534 180,916