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Supplemental cash flow information (Tables) | 12 Months Ended
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Dec. 31, 2023
Statement of cash flows [abstract] |
Partial Cash Paid for Investing Activities | Property, plant and equipment
|  | Year ended December 31,
|  | 2021 |  | 2022 |  | 2023
|  | NT$000 |  | NT$000 |  | NT$000
Purchase of property, plant and equipment |  | 6,552,702 |  | 4,918,482 |  | 3,228,471
Add: Beginning balance of payable to equipment suppliers |  | 1,145,359 |  | 1,816,555 |  | 1,405,931
Less: Ending balance of payable to equipment suppliers |  | (1,816,555) |  | (1,405,931) |  | (1,196,181)
Less: Ending balance of payable to equipment suppliers – related parties |  | — |  | — |  | (58,549)
Less: Transfer from other non-current assets |  | — |  | (629,737) |  | (305,791)
Cash paid during the year |  | 5,881,506 |  | 4,699,369 |  | 3,073,881

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