Allowance for Credit Losses - Credit quality indicator write-offs (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Allowance for Credit Losses
Total	$ 48	$ 42	$ 101	$ 177
Internally Rated
Allowance for Credit Losses
Year 1			85	91
Year 2			5	10
Year 3			9	20
Year 4			0	0
Year 5			1	0
Prior			1	56
Revolving Loans			0	0
Revolving Loans Converted to Term Loans			0	0
Total			101	177
Real estate, nonresidential
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	0	0
Real estate, nonresidential \| A, B, or C
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
Real estate, nonresidential \| 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
Real estate, nonresidential \| D
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
Real estate, nonresidential \| E
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			1	45
Revolving Loans			0	0
Revolving Loans Converted to Term Loans			0	0
Total			1	45
Real estate, nonresidential \| 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
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			1	45
Revolving Loans			0	0
Revolving Loans Converted to Term Loans			0	0
Total			1	45
Consumer/Other \| A, B, or C
Allowance for Credit Losses
Year 1			85	91
Year 2			1	1
Year 3			9	0
Year 4			0	0
Year 5			1	0
Prior			0	0
Revolving Loans			0	0
Revolving Loans Converted to Term Loans			0	0
Total			96	92
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			1	9
Year 3			0	0
Year 4			0	0
Year 5			0	0
Prior			0	8
Revolving Loans			0	0
Revolving Loans Converted to Term Loans			0	0
Total			1	17
Consumer/Other \| E
Allowance for Credit Losses
Year 1			0	0
Year 2			3	0
Year 3			0	20
Year 4			0	0
Year 5			0	0
Prior			0	3
Revolving Loans			0	0
Revolving Loans Converted to Term Loans			0	0
Total			3	23
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			85	91
Year 2			5	10
Year 3			9	20
Year 4			0	0
Year 5			1	0
Prior			0	11
Revolving Loans			0	0
Revolving Loans Converted to Term Loans			0	0
Total			$ 100	$ 132

Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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