Liability for Unpaid Losses and Loss Adjustment Expenses - Additional Information (Details) - USD ($) |
Sep. 30, 2025 |
Sep. 30, 2024 |
|---|---|---|
| Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] | ||
| IBNR reserves | $ 152,475,000 | $ 121,773,000 |
| Hurricane [Member] | ||
| Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] | ||
| IBNR reserves | $ 58,830,000 |