Leases - Narrative (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2022 USD ($) item	Sep. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)
Leases
Number of leased branch offices | item	8
Number of leased administrative offices | item	2
Weighted average remaining life of the lease terms	11 years 4 months 24 days		12 years
Weighted average discount rate	2.52%		2.51%
Operating lease costs	$ 597	$ 539
Deferred rent liability	118		$ 145
Operating lease right-of-use asset	$ 7,345		$ 7,839
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other Assets.		Other Assets.
Operating lease liability	$ 7,345		$ 7,839
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Accrued Liabilities and Other Liabilities		Accrued Liabilities and Other Liabilities