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Income Taxes - Tax Effect of Temporary Differences and Tax Attributes Representing Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
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Deferred tax assets: |  |
Net operating loss carryforwards | $ 406,876 | $ 498,948
Tax credits | 17,254 | 13,488
Expense associated with stock options and restricted stock units | 8,344 | 10,892
Workers’ compensation allowance | 9,437 | 7,024
Other deferred tax asset | 79,132 | 69,480
Total deferred tax assets, gross | 521,043 | 599,832
Allowance to reduce deferred tax asset to expected realizable value | (86,693) | (75,250)
Total deferred tax assets | 434,350 | 524,582
Deferred tax liabilities: |  |
Property and equipment basis difference | (654,541) | (729,376)
Other | (17,906) | (39,386)
Total deferred tax liabilities | (672,447) | (768,762)
Net deferred tax liability | $ (238,097) | $ (244,180)

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