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Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2021
Intangible Assets, Net (Excluding Goodwill) [Abstract] |
Schedule of Net Intangible Assets |
|  |  |  |  | December 31 |
|  |  |  |  | 2020 |  |  | 2021 |
|  | Useful |  |  | US$ thousands |
Original cost: |  |  |  |  |  |  |  |  |
Capitalization of software development costs |  |  | 3 |  |  |  | 2,983 |  |  |  | 6,546 |
Licenses |  |  | 3 |  |  |  | 556 |  |  |  | 565 |
|  |  |  |  |  |  | 3,539 |  |  |  | 7,111 |
Accumulated amortization: |  |  |  |  |  |  |  |  |  |  |  |
Capitalization of software development costs |  |  |  |  |  |  | 2,163 |  |  |  | 2,366 |
Licenses |  |  |  |  |  |  | 206 |  |  |  | 431 |
|  |  |  |  |  |  | 2,369 |  |  |  | 2,797 |
Intangible assets, net: |  |  |  |  |  |  |  |  |  |  |  |
Capitalization of software development costs |  |  |  |  |  |  | 820 |  |  |  | 4,180 |
Licenses |  |  |  |  |  |  | 350 |  |  |  | 134 |
|  |  |  |  |  |  | 1,170 |  |  |  | 4,314 |

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