Loans and Allowance for Credit Losses - Loans - Allowance for Credit Losses (Details)	12 Months Ended
	Dec. 31, 2024 USD ($) borrower	Dec. 31, 2023 USD ($) borrower
Financing Receivable, Allowance for Credit Losses
Number of borrowers | borrower	13	12
Loans charged off	$ 384,000	$ 203,000
Term Loans by Origination Year
Year 3	13,000
Year 4	299,000
Year 5	51,000
Prior	21,000
Total	384,000	203,000
Commercial and Industrial | Commercial and Industrial
Financing Receivable, Allowance for Credit Losses
Loans charged off	299,000
Term Loans by Origination Year
Year 4	299,000
Total	299,000
Consumer Loans
Financing Receivable, Allowance for Credit Losses
Loans charged off	85,000
Term Loans by Origination Year
Year 3	13,000
Year 5	51,000
Prior	21,000
Total	85,000
Consumer Loans | Consumer
Financing Receivable, Allowance for Credit Losses
Loans charged off	18,000	79,000
Term Loans by Origination Year
Year 3	13,000
Prior	5,000
Total	18,000	79,000
Consumer Loans | Automobile
Financing Receivable, Allowance for Credit Losses
Loans charged off	67,000	124,000
Term Loans by Origination Year
Year 5	51,000
Prior	16,000
Total	$ 67,000	$ 124,000