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Loans - Provision for Credit Losses on Off-Balance Sheet Commitments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Jun. 30, 2023	Jan. 01, 2023	Dec. 31, 2022	Jun. 30, 2022	Dec. 31, 2021
Financing Receivable, Allowance for Credit Loss [Line Items]
Liability for off-balance sheet credit exposures							$ 0	$ 3,491
Provision for credit losses 1	$ 111	$ 0	$ 1,098	$ 0
Total loans	36,452	29,866	36,452	29,866	$ 36,058		31,737	29,153	$ 27,841
Provision for credit losses 1	1,850	892	11,976	2,868
Losses Charged Off	(1,517)	(236)	(10,639)	(2,467)
Recoveries	61	57	416	1,624
Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Liability for off-balance sheet credit exposures						$ 2,504	1,900
Total loans						2,962
Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Line Items]
Liability for off-balance sheet credit exposures	3,602		3,602			2,504
Total loans	36,452		36,452			34,699
Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	2,110	1,727	2,110	1,727	1,849		1,711	2,026	1,891
Provision for credit losses 1	260	(301)	7,265	(166)
Losses Charged Off	0	0	(6,965)	0
Recoveries	1	2	219	2
Commercial and industrial | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans						(120)
Commercial and industrial | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	2,110		2,110
Owner-occupied commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	858	616	858	616	789		651	703	742
Provision for credit losses 1	69	(87)	145	(126)
Losses Charged Off	0	0	0	0
Recoveries	0	0	0	0
Owner-occupied commercial real estate | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans						62
Owner-occupied commercial real estate | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	858		858
Investor commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	1,313	1,074	1,313	1,074	1,416		1,099	621	328
Provision for credit losses 1	488	453	996	746
Losses Charged Off	(591)	0	(591)	0
Recoveries	0	0	0	0
Investor commercial real estate | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans						(191)
Investor commercial real estate | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	1,313		1,313
Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	2,103	1,590	2,103	1,590	1,940		2,074	1,707	1,612
Provision for credit losses 1	163	(117)	464	(22)
Losses Charged Off	0	0	0	0
Recoveries	0	0	0	0
Construction | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans						(435)
Construction | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	2,103		2,103
Healthcare finance
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	2,227	3,612	2,227	3,612	2,421		2,997	4,762	5,940
Provision for credit losses 1	(194)	(1,150)	(1,779)	(2,328)
Losses Charged Off	0	0	(25)	0
Recoveries	0	0	0	0
Healthcare finance | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans						1,034
Healthcare finance | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	2,227		2,227
Residential mortgage
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	2,280	1,370	2,280	1,370	2,550		1,559	1,138	643
Provision for credit losses 1	(215)	231	367	724
Losses Charged Off	(56)	0	(56)	0
Recoveries	1	1	4	3
Residential mortgage | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans						406
Residential mortgage | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	2,280		2,280
Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	192	62	192	62	224		69	54	64
Provision for credit losses 1	(34)	7	(15)	(139)
Losses Charged Off	0	0	0	0
Recoveries	2	1	5	137
Home equity | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans						133
Home equity | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	192		192
Other consumer loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	6,125	2,938	6,125	2,938	6,288		3,149	2,343	1,990
Provision for credit losses 1	(88)	651	811	1,116
Losses Charged Off	(119)	(106)	(502)	(397)
Recoveries	44	50	134	229
Other consumer loans | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans						2,533
Other consumer loans | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	6,125		6,125
Single tenant lease financing
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	8,365	10,027	8,365	10,027	9,970		10,519	9,712	10,385
Provision for credit losses 1	(1,605)	315	(1,808)	(1,589)
Losses Charged Off	0	0	0	0
Recoveries	0	0	0	1,231
Single tenant lease financing | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans						(346)
Single tenant lease financing | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	8,365		8,365
Public finance
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	1,411	1,789	1,411	1,789	1,509		1,753	1,850	1,776
Provision for credit losses 1	(98)	(61)	(207)	13
Losses Charged Off	0	0	0	0
Recoveries	0	0	0	0
Public finance | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans						(135)
Public finance | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	1,411		1,411
Small business lending
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	4,221	2,046	4,221	2,046	2,618		2,168	1,956	1,387
Provision for credit losses 1	2,341	217	3,834	847
Losses Charged Off	(751)	(130)	(2,169)	(210)
Recoveries	13	3	54	22
Small business lending | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans						334
Small business lending | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	4,221		4,221
Franchise finance
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	5,247	3,015	5,247	3,015	$ 4,484		3,988	2,281	1,083
Provision for credit losses 1	763	734	1,903	1,932
Losses Charged Off	0	0	(331)	0
Recoveries	0	0	0	0
Franchise finance | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans						(313)
Franchise finance | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	5,247		5,247
Tax Refund Advance Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans		$ 0		0					$ 0
Provision for credit losses 1				1,860
Losses Charged Off				(1,860)
Recoveries				0
Commercial Portfolio Segment
Financing Receivable, Allowance for Credit Loss [Line Items]
Liability for off-balance sheet credit exposures							0	3,355
Provision for credit losses 1			1,197	156
Total loans							26,960
Commercial Portfolio Segment | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Liability for off-balance sheet credit exposures						2,314
Total loans						(110)
Commercial Portfolio Segment | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Line Items]
Liability for off-balance sheet credit exposures	3,511		3,511
Total loans						26,850
Commercial Portfolio Segment | Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Liability for off-balance sheet credit exposures							0	188
Provision for credit losses 1			96	18
Total loans							1,711
Losses Charged Off			(6,965)
Commercial Portfolio Segment | Commercial and industrial | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Liability for off-balance sheet credit exposures						110
Total loans						(120)
Commercial Portfolio Segment | Commercial and industrial | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Line Items]
Liability for off-balance sheet credit exposures	206		206
Total loans						1,591
Commercial Portfolio Segment | Owner-occupied commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Liability for off-balance sheet credit exposures							0	8
Provision for credit losses 1			9	1
Total loans							651
Commercial Portfolio Segment | Owner-occupied commercial real estate | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Liability for off-balance sheet credit exposures						0
Total loans						62
Commercial Portfolio Segment | Owner-occupied commercial real estate | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Line Items]
Liability for off-balance sheet credit exposures	9		9
Total loans						713
Commercial Portfolio Segment | Investor commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Liability for off-balance sheet credit exposures							0	20
Provision for credit losses 1			8	(3)
Total loans							1,099
Losses Charged Off			(591)
Commercial Portfolio Segment | Investor commercial real estate | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Liability for off-balance sheet credit exposures						9
Total loans						(191)
Commercial Portfolio Segment | Investor commercial real estate | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Line Items]
Liability for off-balance sheet credit exposures	17		17
Total loans						908
Commercial Portfolio Segment | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Liability for off-balance sheet credit exposures							0	2,897
Provision for credit losses 1			696	(8)
Total loans							2,074
Commercial Portfolio Segment | Construction | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Liability for off-balance sheet credit exposures						2,193
Total loans						(435)
Commercial Portfolio Segment | Construction | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Line Items]
Liability for off-balance sheet credit exposures	2,889		2,889
Total loans						1,639
Commercial Portfolio Segment | Healthcare finance
Financing Receivable, Allowance for Credit Loss [Line Items]
Liability for off-balance sheet credit exposures							0	0
Provision for credit losses 1			(2)	0
Total loans							2,997
Losses Charged Off			(25)
Commercial Portfolio Segment | Healthcare finance | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Liability for off-balance sheet credit exposures						2
Total loans						1,034
Commercial Portfolio Segment | Healthcare finance | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Line Items]
Liability for off-balance sheet credit exposures	0		0
Total loans						4,031
Commercial Portfolio Segment | Single tenant lease financing
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans							10,519
Commercial Portfolio Segment | Single tenant lease financing | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans						(346)
Commercial Portfolio Segment | Single tenant lease financing | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans						10,173
Commercial Portfolio Segment | Public finance
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans							1,753
Commercial Portfolio Segment | Public finance | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans						(135)
Commercial Portfolio Segment | Public finance | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans						1,618
Commercial Portfolio Segment | Small business lending
Financing Receivable, Allowance for Credit Loss [Line Items]
Liability for off-balance sheet credit exposures							0	242
Provision for credit losses 1			390	148
Total loans							2,168
Losses Charged Off			(2,169)
Commercial Portfolio Segment | Small business lending | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Liability for off-balance sheet credit exposures						0
Total loans						334
Commercial Portfolio Segment | Small business lending | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Line Items]
Liability for off-balance sheet credit exposures	390		390
Total loans						2,502
Commercial Portfolio Segment | Franchise finance
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans							3,988
Losses Charged Off			(331)
Commercial Portfolio Segment | Franchise finance | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans						(313)
Commercial Portfolio Segment | Franchise finance | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans						3,675
Consumer Portfolio
Financing Receivable, Allowance for Credit Loss [Line Items]
Liability for off-balance sheet credit exposures							0	136
Provision for credit losses 1			(99)	(45)
Total loans							4,777
Consumer Portfolio | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Liability for off-balance sheet credit exposures						190
Total loans						3,072
Consumer Portfolio | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Line Items]
Liability for off-balance sheet credit exposures	91		91
Total loans						7,849
Consumer Portfolio | Residential mortgage
Financing Receivable, Allowance for Credit Loss [Line Items]
Liability for off-balance sheet credit exposures							0	59
Provision for credit losses 1			(102)	(34)
Total loans							1,559
Losses Charged Off			(56)
Consumer Portfolio | Residential mortgage | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Liability for off-balance sheet credit exposures						127
Total loans						406
Consumer Portfolio | Residential mortgage | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Line Items]
Liability for off-balance sheet credit exposures	25		25
Total loans						1,965
Consumer Portfolio | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Liability for off-balance sheet credit exposures							0	63
Provision for credit losses 1			2	(9)
Total loans							69
Consumer Portfolio | Home equity | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Liability for off-balance sheet credit exposures						52
Total loans						133
Consumer Portfolio | Home equity | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Line Items]
Liability for off-balance sheet credit exposures	54		54
Total loans						202
Consumer Portfolio | Other consumer loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Liability for off-balance sheet credit exposures							0	$ 14
Provision for credit losses 1			1	$ (2)
Total loans							$ 3,149
Losses Charged Off			(502)
Consumer Portfolio | Other consumer loans | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Liability for off-balance sheet credit exposures						11
Total loans						2,533
Consumer Portfolio | Other consumer loans | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Line Items]
Liability for off-balance sheet credit exposures	$ 12		$ 12
Total loans						$ 5,682

X

- Definition

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

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