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Financial assets at amortized cost (Tables) | 12 Months Ended
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Dec. 31, 2021
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Summary of Financial Assets at Amortized Cost |
|  | December 31, 2020 |  |  | December 31, 2021 |
|  | NT$000 |  |  | NT$000 |
Current: |  |  |  |  |  |  |  |
Time deposits |  |  | 206,482 |  |  |  | 29,239 |
Non-current: |  |  |  |  |  |  |  |
Restricted bank deposits |  |  | 48,319 |  |  |  | 37,539 |
| a) | Amounts recognized in profit or loss in relation to financial assets at amortized cost are listed below:
|  | Year ended December 31, |
|  | 2019 |  |  | 2020 |  |  | 2021 |
|  | NT$000 |  |  | NT$000 |  |  | NT$000 |
Interest income |  |  | 4,467 |  |  |  | 2,206 |  |  |  | 1,187 |

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