Loans and Allowance for Credit Losses on Loans - Performance of loans that have been modified (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total financing receivable modified	$ 50	$ 42	$ 92
30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total financing receivable modified	22		22
60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total financing receivable modified		36	36
90 Days or Greater Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total financing receivable modified	28	6	34
Commercial. | Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total financing receivable modified	50	42	92
Commercial. | Commercial | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total financing receivable modified	22		22
Commercial. | Commercial | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total financing receivable modified		36	36
Commercial. | Commercial | 90 Days or Greater Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total financing receivable modified	$ 28	$ 6	$ 34