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Derivatives - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
Derivatives - Narrative (Details) - USD ($) $ in Millions	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 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	25.7		25.7		$ 20.0
Forward contract notional value
Derivative
Notional amount	31.1		31.1		29.2
Not designated as hedging instrument \| Interest rate swap
Derivative
Notional amount	801.8		801.8		840.9
Derivative fee income from non-designated hedges	0.0	$ 0.0	0.2	$ 0.9
Fair value hedges \| Designated as hedging instrument \| Interest rate swap
Derivative
Notional amount	343.1		343.1		$ 348.5
Cash flow hedges \| Designated as hedging instrument
Derivative
Notional amount	$ 200.0		200.0
Reclassification of accumulated other comprehensive loss during the next 12 months			$ 0.7