Segment Reporting (Details Textuals) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Risk Management and Shared Services [Member]
Segment Reporting Information [Line Items]
A portion of total depreciation Equipment expense	$ 6.0	$ 6.0	$ 11.9	$ 14.0
Corporate and Commercial Specialty [Member]
Segment Reporting Information [Line Items]
A portion of total depreciation Technology expense	0.2	0.1	0.3	0.1
Community, Consumer and Business [Member]
Segment Reporting Information [Line Items]
A portion of total depreciation Occupancy expense	$ 6.3	$ 5.9	$ 12.5	$ 11.8