Derivative Instruments and Hedging Activities - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Derivative [Line Items]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax	$ 0.0	$ 0.1	$ 0.0	$ 0.4
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax	0.1	(0.4)	0.1	(1.4)
Financial Instruments	0.0		0.0		$ 0.0
Collateral Pledged
Derivative [Line Items]
Derivative, Fair Value, Net	0.0		0.0		0.0
Financial Instruments	0.0		0.0		0.0
Not Designated as Hedging Instrument
Derivative [Line Items]
Amount of net fee income recognized in other noninterest income			0.0	0.0
Amount of net gains recognized in mortgage banking revenues			0.0	0.0
Interest Rate Swap | Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax	0.0	$ (0.9)	0.0	$ (1.9)
Interest Rate Swap and Interest Rate Collar
Derivative [Line Items]
Financial Instruments	$ 0.0		$ 0.0		$ 0.0