Loans and Allowance for Credit Losses - Loans - Impaired Financing Receivables (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Impaired [Line Items]
Recorded Investment with specific reserves	$ 129	$ 254
Unpaid Principal Balance with specific reserves	329	333
Interest Income Recognized with specific reserves	4	21
Specific Reserve with specific reserves	200	79
Average Recorded Investment	547	547
Recorded Investments with no specific reserve	269	155
Unpaid Principal Balance with no specific reserves	269	155
Interest Income Recognized with no specific reserve	11	8
Average Recorded Investment with no specific reserve	234	186
Real Estate Loan
Financing Receivable, Impaired [Line Items]
Recorded Investment with specific reserves	9	14
Unpaid Principal Balance with specific reserves	30	34
Interest Income Recognized with specific reserves	4	2
Specific Reserve with specific reserves	21	20
Average Recorded Investment	48	48
Recorded Investments with no specific reserve	115	70
Unpaid Principal Balance with no specific reserves	115	70
Interest Income Recognized with no specific reserve	5	2
Average Recorded Investment with no specific reserve	130	79
Commercial and Industrial
Financing Receivable, Impaired [Line Items]
Recorded Investment with specific reserves	120	240
Unpaid Principal Balance with specific reserves	299	299
Interest Income Recognized with specific reserves		19
Specific Reserve with specific reserves	179	59
Average Recorded Investment	499	499
Consumer Loans
Financing Receivable, Impaired [Line Items]
Recorded Investments with no specific reserve	154	85
Unpaid Principal Balance with no specific reserves	154	85
Interest Income Recognized with no specific reserve	6	6
Average Recorded Investment with no specific reserve	104	107
Single-family Residential | Real Estate Loan
Financing Receivable, Impaired [Line Items]
Recorded Investment with specific reserves	9	14
Unpaid Principal Balance with specific reserves	30	34
Interest Income Recognized with specific reserves	4	2
Specific Reserve with specific reserves	21	20
Average Recorded Investment	48	48
Recorded Investments with no specific reserve	115	70
Unpaid Principal Balance with no specific reserves	115	70
Interest Income Recognized with no specific reserve	5	2
Average Recorded Investment with no specific reserve	130	79
Commercial and Industrial | Commercial and Industrial
Financing Receivable, Impaired [Line Items]
Recorded Investment with specific reserves	120	240
Unpaid Principal Balance with specific reserves	299	299
Interest Income Recognized with specific reserves		19
Specific Reserve with specific reserves	179	59
Average Recorded Investment	499	499
Automobile | Consumer Loans
Financing Receivable, Impaired [Line Items]
Recorded Investments with no specific reserve	154	85
Unpaid Principal Balance with no specific reserves	154	85
Interest Income Recognized with no specific reserve	6	6
Average Recorded Investment with no specific reserve	$ 104	$ 107