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Allowance for Credit Losses - Credit quality indicator write-offs (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Allowance for Credit Losses
Total	$ 44	$ 40	$ 222	$ 427
Internally Rated
Allowance for Credit Losses
Year 1			121	152
Year 2			14	2
Year 3			20	0
Year 4			0	3
Year 5			0	0
Prior			67	270
Revolving Loans			0	0
Revolving Loans converted to Term Loans			0	0
Total			222	427
Real estate, nonresidential
Allowance for Credit Losses
Total	0	0	0	270
Real estate, nonresidential \| A, B, or C
Allowance for Credit Losses
Year 1				0
Year 2				0
Year 3				0
Year 4				0
Year 5				0
Prior				0
Revolving Loans				0
Revolving Loans converted to Term Loans				0
Total				0
Real estate, nonresidential \| S
Allowance for Credit Losses
Year 1				0
Year 2				0
Year 3				0
Year 4				0
Year 5				0
Prior				0
Revolving Loans				0
Revolving Loans converted to Term Loans				0
Total				0
Real estate, nonresidential \| D
Allowance for Credit Losses
Year 1				0
Year 2				0
Year 3				0
Year 4				0
Year 5				0
Prior				0
Revolving Loans				0
Revolving Loans converted to Term Loans				0
Total				0
Real estate, nonresidential \| E
Allowance for Credit Losses
Year 1				0
Year 2				0
Year 3				0
Year 4				0
Year 5				0
Prior				270
Revolving Loans				0
Revolving Loans converted to Term Loans				0
Total				270
Real estate, nonresidential \| F
Allowance for Credit Losses
Year 1				0
Year 2				0
Year 3				0
Year 4				0
Year 5				0
Prior				0
Revolving Loans				0
Revolving Loans converted to Term Loans				0
Total				0
Real estate, nonresidential \| Internally Rated
Allowance for Credit Losses
Year 1			0	0
Year 2			0	0
Year 3			0	0
Year 4			0	0
Year 5			0	0
Prior			57	270
Revolving Loans			0	0
Revolving Loans converted to Term Loans			0	0
Total			57	270
Real estate, residential
Allowance for Credit Losses
Total	$ 11	$ 0	57	0
Real estate, residential \| A, B, or C
Allowance for Credit Losses
Year 1			0
Year 2			0
Year 3			0
Year 4			0
Year 5			0
Prior			0
Revolving Loans			0
Revolving Loans converted to Term Loans			0
Total			0
Real estate, residential \| S
Allowance for Credit Losses
Year 1			0
Year 2			0
Year 3			0
Year 4			0
Year 5			0
Prior			0
Revolving Loans			0
Revolving Loans converted to Term Loans			0
Total			0
Real estate, residential \| D
Allowance for Credit Losses
Year 1			0
Year 2			0
Year 3			0
Year 4			0
Year 5			0
Prior			0
Revolving Loans			0
Revolving Loans converted to Term Loans			0
Total			0
Real estate, residential \| E
Allowance for Credit Losses
Year 1			0
Year 2			0
Year 3			0
Year 4			0
Year 5			0
Prior			57
Revolving Loans			0
Revolving Loans converted to Term Loans			0
Total			57
Real estate, residential \| F
Allowance for Credit Losses
Year 1			0
Year 2			0
Year 3			0
Year 4			0
Year 5			0
Prior			0
Revolving Loans			0
Revolving Loans converted to Term Loans			0
Total			0
Consumer/Other \| A, B, or C
Allowance for Credit Losses
Year 1			121	152
Year 2			1	2
Year 3			0	0
Year 4			0	0
Year 5			0	0
Prior			0	0
Revolving Loans			0	0
Revolving Loans converted to Term Loans			0	0
Total			122	154
Consumer/Other \| S
Allowance for Credit Losses
Year 1			0	0
Year 2			0	0
Year 3			0	0
Year 4			0	0
Year 5			0	0
Prior			0	0
Revolving Loans			0	0
Revolving Loans converted to Term Loans			0	0
Total			0	0
Consumer/Other \| D
Allowance for Credit Losses
Year 1			0	0
Year 2			6	0
Year 3			0	0
Year 4			0	0
Year 5			0	0
Prior			7	0
Revolving Loans			0	0
Revolving Loans converted to Term Loans			0	0
Total			13	0
Consumer/Other \| E
Allowance for Credit Losses
Year 1			0	0
Year 2			7	0
Year 3			20	0
Year 4			0	3
Year 5			0	0
Prior			3	0
Revolving Loans			0	0
Revolving Loans converted to Term Loans			0	0
Total			30	3
Consumer/Other \| F
Allowance for Credit Losses
Year 1			0	0
Year 2			0	0
Year 3			0	0
Year 4			0	0
Year 5			0	0
Prior			0	0
Revolving Loans			0	0
Revolving Loans converted to Term Loans			0	0
Total			0	0
Consumer/Other \| Internally Rated
Allowance for Credit Losses
Year 1			121	152
Year 2			14	2
Year 3			20	0
Year 4			0	3
Year 5			0	0
Prior			10	0
Revolving Loans			0	0
Revolving Loans converted to Term Loans			0	0
Total			$ 165	$ 157