Investments - Schedule of Other Long-Term Investments (Details) - USD ($) $ in Thousands |
Jun. 30, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Long-Term Investment [Line Items] | ||
| Commercial mortgage loan participations | $ 1,268,624 | $ 1,235,759 |
| Other | ||
| Long-Term Investment [Line Items] | ||
| Commercial mortgage loan participations | 43,345 | 46,259 |
| Investment funds | ||
| Long-Term Investment [Line Items] | ||
| Commercial mortgage loan participations | 1,022,425 | 986,766 |
| Company-owned life insurance | ||
| Long-Term Investment [Line Items] | ||
| Commercial mortgage loan participations | $ 202,854 | $ 202,734 |