Leases - Narrative (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($) item	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($)
Leases
Number of leased branch offices | item	7
Number of leased administrative offices | item	2
Weighted average remaining life of the lease terms	11 years 4 months 24 days		11 years 7 months 6 days
Weighted average discount rate	2.58%		2.58%
Operating lease costs	$ 178	$ 195
Deferred rent liability	95		$ 105
Operating lease right-of-use asset	$ 6,750		$ 6,896
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other Assets.		Other Assets.
Operating lease liability	$ 6,750		$ 6,896
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Accrued Liabilities and Other Liabilities		Accrued Liabilities and Other Liabilities