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Loans - Impaired Loans (Details) $ in Thousands	3 Months Ended	9 Months Ended
Loans - Impaired Loans (Details) $ in Thousands	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) loan	Sep. 30, 2022 USD ($)	Jun. 30, 2023 USD ($)	Dec. 31, 2022 USD ($) loan	Jun. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans without a specific valuation allowance - Recorded Balance					$ 23,226
Loans without a specific valuation allowance - Unpaid Principal Balance					24,134
Loans without a specific valuation allowance					0
Impaired loans, recorded investment					1,918
Loans with a specific valuation allowance - Unpaid Principal Balance					1,918
Loans without a specific valuation allowance - Average Balance	$ 12,452		$ 8,968
Loans without a specific valuation allowance - Interest Income	9		26
Loans with a specific valuation allowance - Average Balance	3,036		3,506
Loans with a specific valuation allowance - Interest Income	0		45
Average recorded investment	15,488		12,474
Interest Income	9		71
Other real estate owned		$ 106			$ 0
Mortgage loans in process of foreclosure, number of loans \| loan		2			1
Mortgage loans in process of foreclosure, amount		$ 500			$ 100
Total loans	29,866	36,452	29,866	$ 36,058	31,737	$ 29,153	$ 27,841
Loans with a specific valuation allowance					754
Specific allowance					754
Recorded investment					25,144
Unpaid principal balance					26,052
Financing receivable, troubled debt restructuring	700		700
Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans		1,578
Residential Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans		2,573
Other Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans		2,787
Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans		6,938
Total loans		1,521
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans without a specific valuation allowance - Recorded Balance					9,750
Loans without a specific valuation allowance - Unpaid Principal Balance					9,750
Loans without a specific valuation allowance					0
Impaired loans, recorded investment					51
Loans with a specific valuation allowance - Unpaid Principal Balance					51
Loans without a specific valuation allowance - Average Balance	4,906		1,636
Loans without a specific valuation allowance - Interest Income	0		0
Loans with a specific valuation allowance - Average Balance	350		456
Loans with a specific valuation allowance - Interest Income	0		0
Total loans	1,727	2,110	1,727	1,849	1,711	2,026	1,891
Loans with a specific valuation allowance					51
Commercial and industrial \| Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans		0
Commercial and industrial \| Residential Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans		0
Commercial and industrial \| Other Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans		1,370
Commercial and industrial \| Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans		1,370
Total loans		0
Owner-occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans without a specific valuation allowance - Recorded Balance					1,570
Loans without a specific valuation allowance - Unpaid Principal Balance					1,779
Loans without a specific valuation allowance					0
Loans without a specific valuation allowance - Average Balance	1,645		2,471
Loans without a specific valuation allowance - Interest Income	0		0
Total loans	616	858	616	789	651	703	742
Owner-occupied commercial real estate \| Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans		0
Owner-occupied commercial real estate \| Residential Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans		0
Owner-occupied commercial real estate \| Other Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans		0
Owner-occupied commercial real estate \| Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans		0
Total loans		0
Single tenant lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans with a specific valuation allowance - Average Balance	0		547
Loans with a specific valuation allowance - Interest Income	0		0
Total loans	10,027	8,365	10,027	9,970	10,519	9,712	10,385
Healthcare finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans with a specific valuation allowance - Average Balance	660		826
Loans with a specific valuation allowance - Interest Income	0		45
Total loans	3,612	2,227	3,612	2,421	2,997	4,762	5,940
Small business lending
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans without a specific valuation allowance - Recorded Balance					8,184
Loans without a specific valuation allowance - Unpaid Principal Balance					8,705
Loans without a specific valuation allowance					0
Impaired loans, recorded investment					1,867
Loans with a specific valuation allowance - Unpaid Principal Balance					1,867
Loans without a specific valuation allowance - Average Balance	2,167		1,288
Loans without a specific valuation allowance - Interest Income		0	0
Loans with a specific valuation allowance - Average Balance	1,827		1,611
Loans with a specific valuation allowance - Interest Income	0		0
Total loans	2,046	4,221	2,046	2,618	2,168	1,956	1,387
Loans with a specific valuation allowance					703
Small business lending \| Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans		1,578
Small business lending \| Residential Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans		1,219
Small business lending \| Other Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans		1,328
Small business lending \| Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans		4,125
Total loans		1,521
Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans without a specific valuation allowance - Recorded Balance					3,676
Loans without a specific valuation allowance - Unpaid Principal Balance					3,835
Loans without a specific valuation allowance					0
Loans without a specific valuation allowance - Average Balance	3,711		3,550
Loans without a specific valuation allowance - Interest Income	9		26
Total loans	1,370	2,280	1,370	2,550	1,559	1,138	643
Residential mortgage \| Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans		0
Residential mortgage \| Residential Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans		1,354
Residential mortgage \| Other Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans		0
Residential mortgage \| Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans		1,354
Total loans		0
Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans without a specific valuation allowance - Recorded Balance					29
Loans without a specific valuation allowance - Unpaid Principal Balance					29
Loans without a specific valuation allowance					0
Loans without a specific valuation allowance - Average Balance	15		14
Loans without a specific valuation allowance - Interest Income	0		0
Total loans	62	192	62	224	69	54	64
Other consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans without a specific valuation allowance - Recorded Balance					17
Loans without a specific valuation allowance - Unpaid Principal Balance					36
Loans without a specific valuation allowance					0
Loans without a specific valuation allowance - Average Balance	8		9
Loans without a specific valuation allowance - Interest Income	0		0
Loans with a specific valuation allowance - Average Balance	199		66
Loans with a specific valuation allowance - Interest Income	0		0
Total loans	$ 2,938	6,125	$ 2,938	$ 6,288	$ 3,149	$ 2,343	$ 1,990
Other consumer loans \| Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans		0
Other consumer loans \| Residential Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans		0
Other consumer loans \| Other Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans		89
Other consumer loans \| Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans		89
Total loans		$ 0