Summary of Significant Accounting Policies - Leases (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) lease	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Short-term lease expense	$ 193	$ 164	$ 139
Variable lease payments	$ 1,000	$ 1,100	1,100
Weighted-average remaining lease term-operating leases (Year)	6 years 7 months 6 days	7 years 4 months 24 days
Weighted average discount rate-operating leases	2.90%	3.10%
Minimum [Member]
Term of contract	3 months
Maximum [Member]
Term of contract	13 years
Branches And Office Space [Member]
Number of leases | lease	30
Vehicles [Member]
Number of leases | lease	10
Equipment [Member]
Number of leases | lease	1
Building and Equipment [Member]
Operating lease cost	$ 8,500	$ 8,600	7,700
Other Operation Expenses [Member]
Operating lease cost	$ 100	$ 100	$ 100