Loans and Allowance for Credit Losses - Loans - Allowance for Credit Losses (Details)	12 Months Ended
	Dec. 31, 2023 USD ($) borrower	Dec. 31, 2022 USD ($) borrower
Financing Receivable, Allowance For Credit Losses [Line Items]
Number of borrowers | borrower	12	19
Loans charged off	$ 203,000	$ 392,000
Term Loans by Origination Year
2021	47,000
2020	43,000
2019	27,000
Prior	86,000
Total	203,000	$ 392,000
Consumer | Consumer Loans
Financing Receivable, Allowance For Credit Losses [Line Items]
Loans charged off	79,000
Term Loans by Origination Year
Prior	79,000
Total	79,000
Automobile | Consumer Loans
Financing Receivable, Allowance For Credit Losses [Line Items]
Loans charged off	124,000
Term Loans by Origination Year
2021	47,000
2020	43,000
2019	27,000
Prior	7,000
Total	$ 124,000