Bank Premises and Equipment - Depreciation Expense Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Depreciation expense	$ 7.0	$ 6.1
Building and premises | Minimum
Property, Plant and Equipment [Line Items]
Useful life	5 years
Building and premises | Maximum
Property, Plant and Equipment [Line Items]
Useful life	40 years
Furniture, fixtures and equipment | Minimum
Property, Plant and Equipment [Line Items]
Useful life	2 years
Furniture, fixtures and equipment | Maximum
Property, Plant and Equipment [Line Items]
Useful life	10 years