Policy Liabilities - Schedule of Policyholder Account Balance (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Interest Sensitive Life | ||||
| Policyholder Account Balance [Roll Forward] | ||||
| Beginning Balance | $ 720,269 | $ 729,721 | $ 723,389 | $ 732,948 |
| Issuances | 0 | 0 | 0 | 0 |
| Premiums and deposits received | 5,150 | 5,486 | 10,400 | 11,110 |
| Policy charges | (2,892) | (3,061) | (5,878) | (6,172) |
| Surrenders and withdrawals | (6,108) | (5,167) | (12,074) | (11,476) |
| Benefit payments | (8,003) | (7,600) | (16,332) | (16,740) |
| Interest credited | 6,883 | 6,952 | 13,758 | 13,968 |
| Other | 1,841 | 1,766 | 3,877 | 4,459 |
| Ending Balance | $ 717,140 | $ 728,097 | $ 717,140 | $ 728,097 |
| Weighted-average credit rate | 3.89% | 3.87% | 3.89% | 3.87% |
| Net amount at risk | $ 1,609,774 | $ 1,714,347 | $ 1,609,774 | $ 1,714,347 |
| Cash surrender value | 671,517 | 680,564 | 671,517 | 680,564 |
| Deferred Annuity | ||||
| Policyholder Account Balance [Roll Forward] | ||||
| Beginning Balance | 636,219 | 739,019 | 656,573 | 773,039 |
| Issuances | 176 | 160 | 347 | 358 |
| Premiums and deposits received | 3,187 | 2,836 | 6,953 | 6,409 |
| Policy charges | 0 | 0 | 0 | 0 |
| Surrenders and withdrawals | (15,534) | (30,999) | (32,065) | (62,562) |
| Benefit payments | (13,095) | (11,366) | (25,926) | (24,137) |
| Interest credited | 5,188 | 5,970 | 10,561 | 12,213 |
| Other | (244) | 402 | (546) | 702 |
| Ending Balance | $ 615,897 | $ 706,022 | $ 615,897 | $ 706,022 |
| Weighted-average credit rate | 3.36% | 3.35% | 3.36% | 3.35% |
| Cash surrender value | $ 615,897 | $ 706,022 | $ 615,897 | $ 706,022 |
| Amount reinsured with third-party reinsurers under existing reinsurance agreements | 427,000 | 427,000 | ||
| Other Policy-holders' Funds | ||||
| Policyholder Account Balance [Roll Forward] | ||||
| Beginning Balance | 463,148 | 401,269 | 468,604 | 236,958 |
| Issuances | 0 | 0 | 0 | 0 |
| Premiums and deposits received | 61,635 | 1,770 | 148,520 | 168,470 |
| Policy charges | 0 | 0 | 0 | 0 |
| Surrenders and withdrawals | (33,780) | (3,834) | (126,908) | (7,351) |
| Benefit payments | 0 | 0 | 0 | 0 |
| Interest credited | 5,460 | 5,583 | 10,903 | 9,104 |
| Other | (4,317) | (4,163) | (8,973) | (6,556) |
| Ending Balance | $ 492,146 | $ 400,625 | $ 492,146 | $ 400,625 |
| Weighted-average credit rate | 4.65% | 5.69% | 4.65% | 5.69% |
| Cash surrender value | $ 492,146 | $ 400,625 | $ 492,146 | $ 400,625 |