Premises and Equipment - Depreciation and Amortization Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense	$ 7,966	$ 7,833	$ 7,715
Premises
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense	2,599	2,608	2,809
Furniture, fixtures, and equipment
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense	$ 5,367	$ 5,225	$ 4,906