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Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Deferred tax assets |  |
Net unrealized loss on investments | $ 93,201 | $ 88,065
State income taxes | 46,463 | 46,170
Unearned premiums | 24,928 | 24,948
Goodwill and intangibles | 24,393 | 29,197
Capitalized research and development | 16,060 | 12,450
Accrued expenses | 11,983 | 10,829
Other | 42,562 | 43,227
Total gross deferred tax assets | 259,590 | 254,886
Less: Valuation allowance | 66,590 | 63,354
Total deferred tax assets | 193,000 | 191,532
Deferred tax liabilities |  |
Contingency reserve | 925,152 | 755,481
Other | 14,533 | 25,615
Total deferred tax liabilities | 939,685 | 781,096
Net deferred tax asset (liability) | $ (746,685) | $ (589,564)

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