Premises and Equipment - Schedule of Premises and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Property Plant And Equipment [Line Items]
Total premises and equipment	$ 17,943	$ 17,453
Accumulated depreciation	(12,982)	(12,205)
Total premises and equipment, net	4,961	5,248
Leasehold improvements
Property Plant And Equipment [Line Items]
Total premises and equipment	9,649	9,135
Furniture and fixtures
Property Plant And Equipment [Line Items]
Total premises and equipment	4,742	4,814
Equipment and others
Property Plant And Equipment [Line Items]
Total premises and equipment	$ 3,552	$ 3,504