Underwriting, Acquisition and Insurance Expenses (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Underwriting, Acquisition and Insurance Expenses [Abstract] | ||||
| Gross commissions | $ 73,202 | $ 73,496 | $ 217,800 | $ 212,428 |
| Ceding commissions | (22,080) | (28,221) | (72,566) | (91,746) |
| Other operating expenses | 44,307 | 43,148 | 131,600 | 124,250 |
| Underwriting, acquisition, and insurance expenses | 95,429 | 88,423 | 276,834 | 244,932 |
| Salaries, bonuses and employee benefits | $ 33,100 | $ 33,300 | $ 99,100 | $ 95,000 |