Premises and Equipment - Summary of Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 64,444	$ 58,599
Less accumulated depreciation	44,486	40,486
Total premises and equipment, net	19,958	18,113
Land
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	873	873
Buildings
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	14,903	14,834
Leasehold improvements
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	2,044	2,036
Furniture, fixtures and equipment
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	14,668	13,551
Purchased software
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	4,648	4,640
Internally developed software
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 27,308	$ 22,665