Bank Premises and Equipment, Net (Major Classes of Bank Premises and Equipment and Total Accumulated Depreciation) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Property Plant And Equipment [Line Items]
Bank premises and equipment, gross	$ 34,638	$ 34,020
Less accumulated depreciation	16,574	15,771
Bank premises and equipment, net	18,064	18,249
Land [Member]
Property Plant And Equipment [Line Items]
Bank premises and equipment, gross	6,644	6,644
Building and improvements [Member]
Property Plant And Equipment [Line Items]
Bank premises and equipment, gross	18,649	18,561
Furniture and equipment [Member]
Property Plant And Equipment [Line Items]
Bank premises and equipment, gross	$ 9,345	$ 8,815