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Fair Value Measurements - Recurring Basis - Investment in ECOTEC - Changes in FV (Details) - ECOTEC - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Reconciliation of changes in fair value |  |  |
Unrealized loss | $ 0 | $ 1,500 | $ 1,000
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Other Nonoperating Income (Expense) | Other Nonoperating Income (Expense) | Other Nonoperating Income (Expense)
Equity investment |  |  |
Reconciliation of changes in fair value |  |  |
Balance, beginning of period | $ 14,671 | $ 14,905 |
Purchases of equity interests |  | 1,250 |
Unrealized loss | $ (25) | $ (1,484) |
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Other Nonoperating Income (Expense) | Other Nonoperating Income (Expense) |
Balance, end of period | $ 14,646 | $ 14,671 | $ 14,905

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