Derivative financial instruments - Power Purchase Agreements - Unrealized and realized gains (losses) (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Derivative financial instruments | |||
| Unrealized gain (loss) recognized in other comprehensive loss | $ (5,785) | $ (3,471) | $ 2,245 |
| Reclassification adjustments on cash flow hedges, net of tax | $ (1,105) | $ 1,007 | $ 83 |