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Intangible Assets | 12 Months Ended
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Dec. 31, 2021
Intangible Assets, Net (Excluding Goodwill) [Abstract] |
Intangible Assets | Note 9 - 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 |
Amortization expense for the years ended December 31, 2019, 2020 and 2021 were US$ 266 thousand, US$ 378 thousand and US$ 428 thousand, respectively. The company recorded an impairment charge of US$ 1,657 thousand in the year ended December 31, 2020, for software that will no longer be utilized by the company and the asset value and accumulated amortization were written off. The impairment was recorded in cost of sales.

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- Definition The entire disclosure for all or part of the information related to intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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