Summary of Significant Accounting Policies - Leases (Details) $ in Thousands	12 Months Ended			36 Months Ended
	Dec. 31, 2023 USD ($) lease	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2023 USD ($) lease
Short-term lease expense	$ 212	$ 193	$ 164
Variable lease payments		$ 1,000		$ 1,100
Weighted-average remaining lease term-operating leases (Year)	6 years 1 month 6 days	6 years 7 months 6 days		6 years 1 month 6 days
Weighted average discount rate-operating leases	3.20%	2.90%		3.20%
Minimum
Term of contract	6 months			6 months
Maximum
Term of contract	12 years			12 years
Branches And Office Space [Member]
Number of leases | lease	31			31
Vehicles [Member]
Number of leases | lease	7			7
Equipment [Member]
Number of leases | lease	1			1
Building and Equipment [Member]
Operating lease cost	$ 8,700	$ 8,500	8,600
Other Operation Expenses [Member]
Operating lease cost	$ 100	$ 100	$ 100