10-K Leases - Components of lease cost (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Finance lease expense: | |||||
| Total amortization of ROU assets | $ 3,119 | $ 3,007 | $ 12,285 | $ 39,044 | $ 15,406 |
| Interest on finance lease liabilities | 4,248 | 4,449 | 17,626 | 17,537 | 18,265 |
| Total finance lease expense | 7,367 | 7,456 | 29,911 | 56,581 | 33,671 |
| Operating lease expense | 7,999 | 7,436 | 32,092 | 30,446 | 28,812 |
| Short-term lease expense | 783 | 944 | 2,467 | 2,589 | 2,282 |
| Total lease expense | 16,149 | 15,836 | 64,470 | 89,616 | 64,765 |
| Sublease income | 100 | 0 | 100 | 100 | 200 |
| Location, Statement of Income, Balance [Axis]: us-gaap:CostOfGoodsAndServicesSold | |||||
| Finance lease expense: | |||||
| Total amortization of ROU assets | 1,684 | 1,701 | 6,686 | 10,257 | 10,589 |
| Location, Statement of Income, Balance [Axis]: us-gaap:OperatingExpenses | |||||
| Finance lease expense: | |||||
| Total amortization of ROU assets | $ 1,435 | $ 1,306 | $ 5,599 | $ 28,787 | $ 4,817 |