Loans Receivables and Allowance for Loan and Lease Losses - Allowance for Loan Losses (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Allowance for Loan and Lease Losses [Roll Forward]
Balance	$ 9,905	$ 10,584	$ 10,115
Charge-offs	(1,828)	(358)	(1,778)
Recoveries	348	179	77
Provisions (credits)	1,885	(500)	2,170
Balance	10,310	9,905	10,584
Collectively evaluated for impairment	2	7
Collectively evaluated for impairment	371	590
Total loans receivable, gross	848,316	739,488
Business Activities Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance	9,905
Balance	10,310	9,905
Individually evaluated for impairment	6,043	2,292
Collectively evaluated for impairment	4,267	7,613
Individually evaluated for impairment	18,916	23,212
Collectively evaluated for impairment	829,400	716,276
Total loans receivable, gross	848,316	739,488
Commercial Real Estate
Allowance for Loan and Lease Losses [Roll Forward]
Balance	5,063	4,485	3,789
Charge-offs	0	(51)	(1,032)
Recoveries	154	0	0
Provisions (credits)	1,749	629	1,728
Balance	6,966	5,063	4,485
Total loans receivable, gross	437,443	365,247
Commercial Real Estate \| Business Activities Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance	5,063
Balance	6,966	5,063
Individually evaluated for impairment	5,430	1,567
Collectively evaluated for impairment	1,536	3,496
Individually evaluated for impairment	11,241	15,704
Collectively evaluated for impairment	426,202	349,543
Total loans receivable, gross	437,443	365,247
Residential Real Estate
Allowance for Loan and Lease Losses [Roll Forward]
Balance	1,700	1,379	1,038
Charge-offs	0	(3)	(24)
Recoveries	4	3	1
Provisions (credits)	(1,039)	321	364
Balance	665	1,700	1,379
Total loans receivable, gross	124,140	158,591
Residential Real Estate \| Business Activities Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance	1,700
Balance	665	1,700
Individually evaluated for impairment	5	3
Collectively evaluated for impairment	660	1,697
Individually evaluated for impairment	2,508	2,954
Collectively evaluated for impairment	121,632	155,637
Total loans receivable, gross	124,140	158,591
Commercial and Industrial
Allowance for Loan and Lease Losses [Roll Forward]
Balance	2,532	3,284	4,340
Charge-offs	(70)	(212)	(677)
Recoveries	69	65	70
Provisions (credits)	(1,128)	(605)	(449)
Balance	1,403	2,532	3,284
Total loans receivable, gross	138,787	122,810
Commercial and Industrial \| Business Activities Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance	2,532
Balance	1,403	2,532
Individually evaluated for impairment	608	722
Collectively evaluated for impairment	795	1,810
Individually evaluated for impairment	4,653	4,031
Collectively evaluated for impairment	134,134	118,779
Total loans receivable, gross	138,787	122,810
Consumer and Other
Allowance for Loan and Lease Losses [Roll Forward]
Balance	253	295	341
Charge-offs	(1,690)	(23)	(45)
Recoveries	121	111	6
Provisions (credits)	2,523	(130)	(7)
Balance	1,207	253	295
Total loans receivable, gross	141,091	59,364
Consumer and Other \| Business Activities Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance	253
Balance	1,207	253
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	1,207	253
Individually evaluated for impairment	514	523
Collectively evaluated for impairment	140,577	58,841
Total loans receivable, gross	141,091	59,364
Construction
Allowance for Loan and Lease Losses [Roll Forward]
Balance	78	739	477
Charge-offs	(68)	(69)	0
Recoveries	0	0
Provisions (credits)	14	(592)	262
Balance	24	78	739
Total loans receivable, gross	4,922	21,781
Construction \| Business Activities Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance	78
Balance	24	78
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	24	78
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	4,922	21,781
Total loans receivable, gross	4,922	21,781
Construction to Permanent - CRE
Allowance for Loan and Lease Losses [Roll Forward]
Balance	41	162	130
Charge-offs	0	0	0
Recoveries	0	0	0
Provisions (credits)	(31)	(121)	32
Balance	10	41	162
Total loans receivable, gross	1,933	11,695
Construction to Permanent - CRE \| Business Activities Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance	41
Balance	10	41
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	10	41
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	1,933	11,695
Total loans receivable, gross	1,933	11,695
Unallocated
Allowance for Loan and Lease Losses [Roll Forward]
Balance	238	240	0
Charge-offs	0	0	0
Recoveries	0	0	0
Provisions (credits)	(203)	(2)	240
Balance	35	238	$ 240
Unallocated \| Business Activities Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance	238
Balance	35	238
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	35	238
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	0	0
Total loans receivable, gross	$ 0	$ 0

Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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The balance of financing receivables that were collectively evaluated for impairment.

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The balance of financing receivables that were individually evaluated for impairment.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount of expense related to estimated loss from loan and lease transactions.

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