Investments - Schedule of Other Long-Term Investments (Details) - USD ($) $ in Thousands |
Mar. 31, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Long-Term Investment [Line Items] | ||
| Commercial mortgage loan participations | $ 1,435,099 | $ 1,396,064 |
| Other | ||
| Long-Term Investment [Line Items] | ||
| Commercial mortgage loan participations | 41,789 | 42,624 |
| Investment funds | ||
| Long-Term Investment [Line Items] | ||
| Commercial mortgage loan participations | 1,070,296 | 1,109,719 |
| Company-owned life insurance | ||
| Long-Term Investment [Line Items] | ||
| Commercial mortgage loan participations | $ 323,014 | $ 243,721 |