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Premises and Equipment - Depreciation (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Property, Plant and Equipment [Line Items]      
Depreciation, Depletion and Amortization, Nonproduction $ 3,708 $ 3,828 $ 3,891
Furniture and Equipment      
Property, Plant and Equipment [Line Items]      
Depreciation 1,994 2,113 2,132
Premises      
Property, Plant and Equipment [Line Items]      
Depreciation 1,623 1,593 1,593
Software      
Property, Plant and Equipment [Line Items]      
Depreciation $ 91 $ 122 $ 166