Policy Liabilities - Schedule of Policyholder Account Balance (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Interest Sensitive Life | ||||
| Policyholder Account Balance [Roll Forward] | ||||
| Beginning Balance | $ 708,729 | $ 720,269 | $ 711,687 | $ 723,389 |
| Issuances | 0 | 0 | 0 | 0 |
| Premiums and deposits received | 4,833 | 5,150 | 9,882 | 10,400 |
| Policy charges | (2,760) | (2,892) | (5,564) | (5,878) |
| Surrenders and withdrawals | (5,884) | (6,108) | (11,511) | (12,074) |
| Benefit payments | (6,563) | (8,003) | (13,814) | (16,332) |
| Interest credited | 6,754 | 6,883 | 13,518 | 13,758 |
| Other | 1,418 | 1,841 | 2,329 | 3,877 |
| Ending Balance | $ 706,527 | $ 717,140 | $ 706,527 | $ 717,140 |
| Weighted-average credit rate | 3.87% | 3.89% | 3.87% | 3.89% |
| Net amount at risk | $ 1,512,781 | $ 1,609,774 | $ 1,512,781 | $ 1,609,774 |
| Cash surrender value | 662,772 | 671,517 | 662,772 | 671,517 |
| Deferred Annuity | ||||
| Policyholder Account Balance [Roll Forward] | ||||
| Beginning Balance | 568,078 | 636,219 | 580,669 | 656,573 |
| Issuances | 287 | 176 | 473 | 347 |
| Premiums and deposits received | 2,903 | 3,187 | 6,972 | 6,953 |
| Policy charges | 0 | 0 | 0 | 0 |
| Surrenders and withdrawals | (14,183) | (15,534) | (27,905) | (32,065) |
| Benefit payments | (10,872) | (13,095) | (18,648) | (25,926) |
| Interest credited | 4,738 | 5,188 | 9,481 | 10,561 |
| Other | (263) | (244) | (354) | (546) |
| Ending Balance | $ 550,688 | $ 615,897 | $ 550,688 | $ 615,897 |
| Weighted-average credit rate | 3.43% | 3.36% | 3.43% | 3.36% |
| Cash surrender value | $ 550,688 | $ 615,897 | $ 550,688 | $ 615,897 |
| Amount reinsured with third-party reinsurers under existing reinsurance agreements | 377,000 | 427,000 | 377,000 | 427,000 |
| Other Policy-holders' Funds | ||||
| Policyholder Account Balance [Roll Forward] | ||||
| Beginning Balance | 576,452 | 463,148 | 532,047 | 468,604 |
| Issuances | 0 | 0 | 0 | 0 |
| Premiums and deposits received | 69,116 | 61,635 | 255,930 | 148,520 |
| Policy charges | 0 | 0 | 0 | 0 |
| Surrenders and withdrawals | (68,625) | (33,780) | (211,943) | (126,908) |
| Benefit payments | 0 | 0 | 0 | 0 |
| Interest credited | 5,809 | 5,460 | 11,413 | 10,903 |
| Other | (4,812) | (4,317) | (9,507) | (8,973) |
| Ending Balance | $ 577,940 | $ 492,146 | $ 577,940 | $ 492,146 |
| Weighted-average credit rate | 4.09% | 4.65% | 4.09% | 4.65% |
| Cash surrender value | $ 577,940 | $ 492,146 | $ 577,940 | $ 492,146 |