Fair Value of Assets and Liabilities - Valuation Technique (Details) - Level 3 $ in Thousands	Sep. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)
Impaired loans | Appraisal value | Property specific adjustment
Valuation techniques and significant unobservable inputs
Impaired loans	$ 4,813	$ 2,469
Foreclosed assets | Appraisal value | Property specific adjustment
Valuation techniques and significant unobservable inputs
Foreclosed assets	$ 904	$ 885
Servicing rights
Valuation techniques and significant unobservable inputs
Loans Held-for-sale, Valuation Technique [Extensible List]	us-gaap:ValuationTechniqueDiscountedCashFlowMember	us-gaap:ValuationTechniqueDiscountedCashFlowMember
Servicing rights | Prepayment speed assumptions
Valuation techniques and significant unobservable inputs
Servicing rights	$ 2,780	$ 1,880
Servicing rights | Prepayment speed assumptions | Minimum
Valuation techniques and significant unobservable inputs
Servicing Asset, Measurement Input	100	161
Servicing rights | Prepayment speed assumptions | Maximum
Valuation techniques and significant unobservable inputs
Servicing Asset, Measurement Input	136	327
Servicing rights | Prepayment speed assumptions | Weighted average
Valuation techniques and significant unobservable inputs
Servicing Asset, Measurement Input	112	237
Servicing rights | Discount rate
Valuation techniques and significant unobservable inputs
Servicing Asset, Measurement Input	0.100	0.095
Servicing rights | Discount rate | Weighted average
Valuation techniques and significant unobservable inputs
Servicing Asset, Measurement Input	0.100	0.095