Premises and Equipment - Schedule of Premises and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Property Plant And Equipment [Line Items]
Total premises and equipment	$ 17,296	$ 17,453
Accumulated depreciation	(12,325)	(12,205)
Total premises and equipment, net	4,971	5,248
Leasehold improvements
Property Plant And Equipment [Line Items]
Total premises and equipment	9,202	9,135
Furniture and fixtures
Property Plant And Equipment [Line Items]
Total premises and equipment	4,585	4,814
Equipment and others
Property Plant And Equipment [Line Items]
Total premises and equipment	$ 3,509	$ 3,504