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Income Taxes - Components of net deferred taxes (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Deferred tax assets: |  |
Net operating loss carryforwards | $ 3,870,614 | $ 4,004,602
Tax credit and other attribute carryforwards | 86,188 | 86,896
Disallowed interest carryforward | 33,907 | 19,311
Other | 88,644 | 106,520
Subtotal | 4,079,353 | 4,217,329
Valuation allowance | (3,825,551) | (3,962,200)
Deferred tax assets | 253,802 | 255,129
Deferred tax liabilities: |  |
Property, plant and equipment | 34,089 | 15,181
Other | 5,903 | 2,443
Deferred tax liability | 39,992 | 17,624
Net deferred tax assets (liabilities) | 213,810 | 237,505
Balance Sheet Summary : |  |
Net noncurrent deferred tax asset | 216,296 | 238,871
Net noncurrent deferred tax liability | (2,486) | (1,366)
Net deferred tax assets (liabilities) | $ 213,810 | $ 237,505

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