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Derivatives - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
Derivatives - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Derivative
Termination value of derivatives in net liability position	$ 0.0		$ 0.0
Interest rate lock commitments notional value
Derivative
Notional amount	30.3		30.3		$ 20.0
Forward contract notional value
Derivative
Notional amount	35.8		35.8		29.2
Not designated as hedging instrument \| Interest rate swap
Derivative
Notional amount	761.4		761.4		840.9
Derivative fee income from non-designated hedges	0.2	$ 0.3	0.4	$ 1.2
Cash flow hedges \| Designated as hedging instrument
Derivative
Notional amount	100.0		100.0
Reclassification of accumulated other comprehensive loss during the next 12 months			0.5
Fair value hedges \| Designated as hedging instrument \| Interest rate swap
Derivative
Notional amount	$ 352.1		$ 352.1		$ 348.5