Investments - Schedule of Fixed Maturities, Allowance for Credit Loss (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward] | ||||
| Allowance for credit losses beginning balance | $ 10,355 | $ 7,027 | $ 10,395 | $ 7,115 |
| Additions to allowance for which credit losses were not previously recorded | 0 | 0 | 0 | 0 |
| Additions (reductions) to allowance for fixed maturities that previously had an allowance | 0 | 105 | (40) | 17 |
| Reduction of allowance for which the Company intends to sell or more likely than not will be required to sell or sold during the period | 0 | 0 | 0 | 0 |
| Allowance for credit losses ending balance | $ 10,355 | $ 7,132 | $ 10,355 | $ 7,132 |