Premises and Equipment - Schedule of Premises and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Property Plant And Equipment [Line Items]
Total premises and equipment	$ 14,405	$ 13,860
Accumulated depreciation	(9,835)	(9,505)
Total premises and equipment, net	4,570	4,355
Leasehold improvements
Property Plant And Equipment [Line Items]
Total premises and equipment	7,706	7,375
Furniture and fixtures
Property Plant And Equipment [Line Items]
Total premises and equipment	3,656	3,530
Equipment and others
Property Plant And Equipment [Line Items]
Total premises and equipment	$ 3,043	$ 2,955