Leases - Narrative (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) location	Dec. 31, 2020 USD ($)
Leases
Number of leased branch offices | location	8
Number of leased administrative offices | location	2
Lessee options to extend	true
Weighted average remaining life of the lease terms	12 years	12 years 8 months 12 days
Weighted average discount rate	2.51%	2.61%
Operating lease costs	$ 731	$ 588
Deferred rent liability	145	176
Operating lease right-of-use asset	$ 7,839	$ 6,289
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other Assets.	Other Assets.
Operating lease liability	$ 7,839	$ 6,289
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Accrued Liabilities and Other Liabilities	Accrued Liabilities and Other Liabilities