Banking Premises and Equipment - Summary of Cost and Accumulated Depreciation and Amortization of Property, Leasehold Improvements and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Property Plant And Equipment [Line Items]
Banking premises and equipment, Subtotal	$ 49,171	$ 40,381
Accumulated depreciation and amortization	(25,874)	(23,055)
Total	23,297	17,326
Land
Property Plant And Equipment [Line Items]
Banking premises and equipment, Subtotal	3,396	1,516
Building and leasehold improvements
Property Plant And Equipment [Line Items]
Banking premises and equipment, Subtotal	$ 25,588	20,254
Building and leasehold improvements | Minimum
Property Plant And Equipment [Line Items]
Estimated Useful Lives	3 years
Building and leasehold improvements | Maximum
Property Plant And Equipment [Line Items]
Estimated Useful Lives	30 years
Equipment, including vaults
Property Plant And Equipment [Line Items]
Banking premises and equipment, Subtotal	$ 20,165	18,592
Equipment, including vaults | Minimum
Property Plant And Equipment [Line Items]
Estimated Useful Lives	3 years
Equipment, including vaults | Maximum
Property Plant And Equipment [Line Items]
Estimated Useful Lives	20 years
Work in process
Property Plant And Equipment [Line Items]
Banking premises and equipment, Subtotal	$ 22	$ 19