Fair Value - Assets and liabilities measured at fair value on a nonrecurring basis (Details) $ in Thousands	Sep. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)
Fair Value
Individually evaluated loans	$ 181,971	$ 170,222
Nonrecurring basis | Fair Value
Fair Value
OREO	1,199	837
Bank properties held for sale	5,227	12,401
Individually evaluated loans	63,415	73,518
Nonrecurring basis | Significant Unobservable Inputs (Level 3)
Fair Value
OREO	1,199	837
Bank properties held for sale	5,227	12,401
Individually evaluated loans	$ 63,415	$ 73,518
Nonrecurring basis | Significant Unobservable Inputs (Level 3) | Impaired loans
Quantitative Information about Level 3 Fair Value Measurements
Long-term Debt, Valuation Technique [Extensible List]	us-gaap:MarketApproachValuationTechniqueMember, us-gaap:ValuationTechniqueDiscountedCashFlowMember	us-gaap:MarketApproachValuationTechniqueMember, us-gaap:ValuationTechniqueDiscountedCashFlowMember
Long-term Debt, Measurement Input [Extensible List]	us-gaap:MeasurementInputDiscountRateMember	us-gaap:MeasurementInputDiscountRateMember
Nonrecurring basis | Significant Unobservable Inputs (Level 3) | Impaired loans | Weighted average
Quantitative Information about Level 3 Fair Value Measurements
Discount rate (as a percent)	22	13
Nonrecurring basis | Significant Unobservable Inputs (Level 3) | OREO
Quantitative Information about Level 3 Fair Value Measurements
Long-term Debt, Valuation Technique [Extensible List]	us-gaap:MarketApproachValuationTechniqueMember	us-gaap:MarketApproachValuationTechniqueMember
Long-term Debt, Measurement Input [Extensible List]	us-gaap:MeasurementInputCostToSellMember, us-gaap:MeasurementInputDiscountRateMember	us-gaap:MeasurementInputCostToSellMember, us-gaap:MeasurementInputDiscountRateMember
Nonrecurring basis | Significant Unobservable Inputs (Level 3) | OREO | Weighted average
Quantitative Information about Level 3 Fair Value Measurements
Discount rate (as a percent)	9	12