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Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2020
Intangible Assets, Net (Excluding Goodwill) [Abstract] |
Schedule of Net Intangible Assets |
|  |  |  |  | December 31 |
|  |  |  |  | 2019 |  |  | 2020 |
|  | Useful life |  |  | US$ thousands |
Original cost: |  |  |  |  |  |  |  |  |
Capitalization of software development costs |  |  | 3 |  |  |  | 1,946 |  |  |  | 2,983 |
Licenses |  |  | 3 |  |  |  | 106 |  |  |  | 556 |
|  |  |  |  |  |  | 2,052 |  |  |  | 3,539 |
Accumulated amortization: |  |  |  |  |  |  |  |  |  |  |  |
Capitalization of software development costs |  |  |  |  |  |  | 274 |  |  |  | 2,163 |
Licenses |  |  |  |  |  |  | 60 |  |  |  | 206 |
|  |  |  |  |  |  | 334 |  |  |  | 2,369 |
Intangible assets, net: |  |  |  |  |  |  |  |  |  |  |  |
Capitalization of software development costs |  |  |  |  |  |  | 1,672 |  |  |  | 820 |
Licenses |  |  |  |  |  |  | 46 |  |  |  | 350 |
|  |  |  |  |  |  | 1,718 |  |  |  | 1,170 |

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