Segment Reporting (Details Textuals) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Risk Management and Shared Services [Member] | ||||
| Segment Reporting Information [Line Items] | ||||
| A portion of total depreciation Equipment expense | $ 5.8 | $ 6.1 | $ 17.7 | $ 20.0 |
| Corporate and Commercial Specialty [Member] | ||||
| Segment Reporting Information [Line Items] | ||||
| A portion of total depreciation Technology expense | 0.2 | 0.1 | 0.5 | 0.2 |
| Community, Consumer and Business [Member] | ||||
| Segment Reporting Information [Line Items] | ||||
| A portion of total depreciation Occupancy expense | $ 6.1 | $ 5.9 | $ 18.6 | $ 17.8 |