Fair Value of Assets and Liabilities - Significant Unobservable Inputs Used in Valuation of Level 3 Fair Value Measurements (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Collateral Dependent Loans | Level 3 | Minimum | Third Party Valuations
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral dependent loans	0.00%	0.00%
Collateral Dependent Loans | Level 3 | Maximum | Third Party Valuations
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral dependent loans	40.00%	40.00%
Collateral Dependent Loans | Level 3 | Weighted Average | Third Party Valuations
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral dependent loans	20.00%	20.00%
Foreclosed Assets Held-for-sale | Level 3 | Minimum | Third Party Valuations
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral dependent loans	0.00%
Foreclosed Assets Held-for-sale | Level 3 | Maximum | Third Party Valuations
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral dependent loans	40.00%
Foreclosed Assets Held-for-sale | Level 3 | Weighted Average | Third Party Valuations
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral dependent loans	35.00%
Fair Value, Nonrecurring | Collateral Dependent Loans
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets, Fair Value	$ 1,669	$ 2,548
Fair Value, Nonrecurring | Collateral Dependent Loans | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets, Fair Value	1,669	$ 2,548
Fair Value, Nonrecurring | Foreclosed Assets Held-for-sale
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets, Fair Value	$ 942