Inventories - Impairment of value of inventory (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Inventories. | |||
| Beginning Balance | $ 30,202 | $ 34,762 | $ 29,842 |
| Provision for finished and in progress goods, note 20(a) | (338) | (4,049) | (10,536) |
| Reversal for finished and in progress goods, note 20(a) | (2,120) | (10,536) | (6,685) |
| Total of provision (reversal) for finished and in progress goods | (1,782) | (6,487) | 3,851 |
| Provision for spare parts and supplies, note 28(a) | 30,255 | 27,304 | 20,478 |
| Reversal for spare parts and supplies, note 28(a) | (27,304) | (25,377) | (19,409) |
| Provision (reversal) for impairment of spare parts and supplies | 2,951 | 1,927 | 1,069 |
| Final balance | $ 31,371 | $ 30,202 | $ 34,762 |