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Schedule II - Parent Corporation Financial Statements - Parent Corporation Balance Sheet (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | --- | ---
ASSETS |  |  |  |
AFS fixed income securities | $ 8,127,334 | $ 7,499,197 |  |
Equity securities | 213,601 | 187,155 |  |
Short-term investments | 509,318 | 309,317 |  |
Alternative investments | 440,896 | 395,779 |  |
Cash | 91 | 180 |  |
Deferred federal income tax | 146,788 | 140,237 |  |
Other assets | 231,403 | 199,760 |  |
Total assets | 13,514,189 | 11,802,546 |  |
Liabilities: |  |  |  |
Long-term debt | 507,938 | 503,946 |  |
Other liabilities | 538,738 | 548,398 |  |
Total liabilities | 10,394,113 | 8,848,165 |  |
Stockholders’ Equity: |  |  |  |
Preferred stock of $0 par value per share: Authorized shares: 5,000,000,000; Issued shares: 8,000 with $25,000 liquidation preference per share – 2024 and 2023 | 200,000 | 200,000 |  |
Common stock of $2 par value per share: Authorized shares 360,000,000 Issued: 105,609,364 – 2024; 105,223,307 – 2023 | 211,219 | 210,447 |  |
Additional paid-in capital | 557,042 | 522,748 |  |
Retained earnings | 3,139,489 | 3,029,396 |  |
Accumulated other comprehensive income (loss) | (336,845) | (373,001) |  |
Treasury stock – at cost (shares: 44,761,468 – 2024; 44,586,870 – 2023) | (650,829) | (635,209) |  |
Total stockholders’ equity | 3,120,076 | 2,954,381 | $ 2,527,564 |
Total liabilities and stockholders’ equity | 13,514,189 | 11,802,546 |  |
Parent Company |  |  |  |
ASSETS |  |  |  |
AFS fixed income securities | 268,486 | 421,089 |  |
Equity securities | 53,248 | 50,920 |  |
Short-term investments | 62,223 | 17,671 |  |
Alternative investments | 18,443 | 18,134 |  |
Cash | 91 | 180 | $ 26 | $ 455
Investment in subsidiaries | 3,191,905 | 2,958,746 |  |
Current federal income tax | 8,675 | 9,006 |  |
Deferred federal income tax | 11,689 | 11,128 |  |
Other assets | 7,998 | 10,101 |  |
Total assets | 3,622,758 | 3,496,975 |  |
Liabilities: |  |  |  |
Long-term debt | 441,656 | 441,310 |  |
Intercompany notes payable | 47,571 | 81,465 |  |
Accrued long-term stock compensation | 9,374 | 10,522 |  |
Other liabilities | 4,081 | 9,297 |  |
Total liabilities | 502,682 | 542,594 |  |
Stockholders’ Equity: |  |  |  |
Preferred stock of $0 par value per share: Authorized shares: 5,000,000,000; Issued shares: 8,000 with $25,000 liquidation preference per share – 2024 and 2023 | 200,000 | 200,000 |  |
Common stock of $2 par value per share: Authorized shares 360,000,000 Issued: 105,609,364 – 2024; 105,223,307 – 2023 | 211,219 | 210,447 |  |
Additional paid-in capital | 557,042 | 522,748 |  |
Retained earnings | 3,139,489 | 3,029,396 |  |
Accumulated other comprehensive income (loss) | (336,845) | (373,001) |  |
Treasury stock – at cost (shares: 44,761,468 – 2024; 44,586,870 – 2023) | (650,829) | (635,209) |  |
Total stockholders’ equity | 3,120,076 | 2,954,381 |  |
Total liabilities and stockholders’ equity | $ 3,622,758 | $ 3,496,975 |  |

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