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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2024
Income Tax Disclosure [Abstract] |
Schedule of Components of Income Tax Provision | The components of our consolidated income tax provision from continuing operations are as follows.
Income tax provision |  |  |  |  |  |  |  |  |
|  | Years Ended December 31, |
(In thousands) |  | 2024 |  |  | 2023 |  |  | 2022 |
Current provision (benefit) |  | $ | 4,575 |  |  | $ | (633 | ) |  | $ | 2,920 |
Deferred provision |  |  | 162,275 |  |  |  | 165,001 |  |  |  | 206,925 |
Total income tax provision |  | $ | 166,850 |  |  | $ | 164,368 |  |  | $ | 209,845 |
Schedule of Reconciliation of Taxes Computed at Statutory Rate to Provision for Income Taxes | The reconciliation of taxes computed at the statutory tax rate of 21% in 2024, 2023 and 2022 to the provision for income taxes is as follows.
Reconciliation of provision for income taxes |
|  | Years Ended December 31, |
|  | 2024 |  |  | 2023 |  |  | 2022 |
(In thousands) |  | $ |  |  | % of Pretax Income |  |  | $ |  |  | % of Pretax Income |  |  | $ |  |  | % of Pretax Income |
Provision for income taxes computed at the statutory tax rate |  | $ | 161,971 |  |  |  | 21.0 | % |  | $ | 161,172 |  |  |  | 21.0 | % |  | $ | 200,084 |  |  |  | 21.0 | %
Change in tax resulting from: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
State tax provision (benefit), net of federal impact |  |  | 537 |  |  |  | 0.1 | % |  |  | 8,988 |  |  |  | 1.2 | % |  |  | 20,869 |  |  |  | 2.2 | %
Valuation allowance |  |  | 3,236 |  |  |  | 0.4 | % |  |  | (6,283 | ) |  |  | (0.8 | )% |  |  | (13,791 | ) |  |  | (1.4 | )%
Nondeductible compensation expense |  |  | 8,668 |  |  |  | 1.1 | % |  |  | 4,659 |  |  |  | 0.6 | % |  |  | 4,413 |  |  |  | 0.5 | %
Other nontaxable or nondeductible items |  |  | (6,344 | ) |  |  | (0.8 | )% |  |  | (1,679 | ) |  |  | (0.3 | )% |  |  | 1,997 |  |  |  | 0.1 | %
Other, net |  |  | (1,218 | ) |  |  | (0.2 | )% |  |  | (2,489 | ) |  |  | (0.3 | )% |  |  | (3,727 | ) |  |  | (0.4 | )%
Income tax provision |  | $ | 166,850 |  |  |  | 21.6 | % |  | $ | 164,368 |  |  |  | 21.4 | % |  | $ | 209,845 |  |  |  | 22.0 | %
Schedule of Components of Deferred Tax Assets and Liabilities | The significant components of our net deferred tax assets and liabilities from continuing operations are summarized as follows.
Deferred tax assets and liabilities |  |  |  |  |  |
|  | December 31, |
(In thousands) |  | 2024 |  |  | 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 | )
Schedule of Reconciliation of Unrecognized Tax Benefits, Excluding Interest and Penalties | A reconciliation of the beginning and ending gross unrecognized tax benefits, excluding interest and penalties, is as follows.
Reconciliation of gross unrecognized tax benefits |  |  |  |  |  |  |  |  |
|  | Years Ended December 31, |
(In thousands) |  | 2024 |  |  | 2023 |  |  | 2022 |
Balance at beginning of period |  | $ | 19,931 |  |  | $ | 20,810 |  |  | $ | 19,888 |
Tax positions related to the current year: |  |  |  |  |  |  |  |  |
Increases |  |  | 698 |  |  |  | 314 |  |  |  | 1,791 |
Decreases |  |  | — |  |  |  | (290 | ) |  |  | — |
Tax positions related to prior years: |  |  |  |  |  |  |  |  |
Increases |  |  | 18,742 |  |  |  | 20,387 |  |  |  | 17,666 |
Decreases |  |  | (106 | ) |  |  | (667 | ) |  |  | (17 | )
Lapses of applicable statute of limitation |  |  | (18,631 | ) |  |  | (20,623 | ) |  |  | (18,518 | )
Balance at end of period |  | $ | 20,634 |  |  | $ | 19,931 |  |  | $ | 20,810 |
Net unrecognized tax benefits that, if recognized, would affect the effective tax rate |  | $ | 4,843 |  |  | $ | 3,519 |  |  | $ | 2,827 |

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