Others - Financial instruments, schedule of significant financial assets and liabilities denominated in foreign currencies (Details) - Foreign exchange risk € in Thousands, ¥ in Thousands, ¥ in Thousands, $ in Thousands, $ in Thousands |
12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
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Dec. 31, 2025
USD ($)
|
Dec. 31, 2024
USD ($)
|
Dec. 31, 2025
TWD ($)
|
Dec. 31, 2025
EUR (€)
|
Dec. 31, 2025
JPY (¥)
|
Dec. 31, 2025
CNY (¥)
|
Dec. 31, 2024
TWD ($)
|
Dec. 31, 2024
EUR (€)
|
Dec. 31, 2024
JPY (¥)
|
Dec. 31, 2024
CNY (¥)
|
|
| NTD:USD | ||||||||||
| Financial instruments | ||||||||||
| Financial assets | $ 8,040 | $ 3,159 | $ 252,844 | $ 103,569 | ||||||
| Exchange rate | 0.0318 | 0.0305 | 0.0318 | 0.0318 | 0.0318 | 0.0318 | 0.0305 | 0.0305 | 0.0305 | 0.0305 |
| Degree of variation, assets | 1.00% | 1.00% | ||||||||
| Effect on profit or loss, assets | $ 80 | $ 32 | ||||||||
| EUR:USD | ||||||||||
| Financial instruments | ||||||||||
| Financial assets | 473 | 310 | € 403 | € 298 | ||||||
| Currency amount, liabilities | $ 282 | $ 205 | € 240 | € 197 | ||||||
| Exchange rate | 1.1740 | 1.0411 | 1.1740 | 1.1740 | 1.1740 | 1.1740 | 1.0411 | 1.0411 | 1.0411 | 1.0411 |
| Degree of variation, assets | 1.00% | 1.00% | ||||||||
| Degree of variation, liabilities | 1.00% | 1.00% | ||||||||
| Effect on profit or loss, assets | $ 5 | $ 3 | ||||||||
| Effect on profit or loss, liabilities | 3 | 2 | ||||||||
| JPY:USD | ||||||||||
| Financial instruments | ||||||||||
| Financial assets | $ 2,603 | $ 1,291 | ¥ 406,761 | ¥ 201,668 | ||||||
| Exchange rate | 0.0064 | 0.0064 | 0.0064 | 0.0064 | 0.0064 | 0.0064 | 0.0064 | 0.0064 | 0.0064 | 0.0064 |
| Degree of variation, assets | 1.00% | 1.00% | ||||||||
| Effect on profit or loss, assets | $ 26 | $ 13 | ||||||||
| USD:RMB | ||||||||||
| Financial instruments | ||||||||||
| Financial assets | $ 327 | $ 320 | ¥ 2,286 | ¥ 2,343 | ||||||
| Exchange rate | 6.9907 | 7.3225 | 6.9907 | 6.9907 | 6.9907 | 6.9907 | 7.3225 | 7.3225 | 7.3225 | 7.3225 |
| Degree of variation, assets | 1.00% | 1.00% | ||||||||
| Effect on profit or loss, assets | $ 3 | $ 3 | ||||||||
| USD:JPY | ||||||||||
| Financial instruments | ||||||||||
| Currency amount, liabilities | $ 98 | $ 100 | ¥ 15,339 | ¥ 15,622 | ||||||
| Exchange rate | 156.52 | 156.22 | 156.52 | 156.52 | 156.52 | 156.52 | 156.22 | 156.22 | 156.22 | 156.22 |
| Degree of variation, liabilities | 1.00% | 1.00% | ||||||||
| Effect on profit or loss, liabilities | $ 1 | $ 1 | ||||||||