Leases - Narrative (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) branchOffice	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Lessee, Lease, Description [Line Items]
Weighted average remaining lease term	19 years 9 months 18 days	19 years 7 months 6 days
Weighted average discount rate (as a percent)	3.19%	2.97%
Operating right-of-use lease assets	$ 17,063	$ 18,733
Lease liabilities	17,833	19,391
Total operating lease expense	$ 3,100	$ 2,900	$ 2,600
Minimum
Lessee, Lease, Description [Line Items]
Option extension period	5 years
Maximum
Lessee, Lease, Description [Line Items]
Option extension period	10 years
Land and Building
Lessee, Lease, Description [Line Items]
Number of branch locations | branchOffice	17
Land
Lessee, Lease, Description [Line Items]
Number of branch locations | branchOffice	10