Allowance for Credit Losses on Loans and Off-Balance Sheet Credit Exposures - Schedule Of Allowance For Loan Losses, By Class (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance beginning of period	$ 8,339	$ 8,336
Charge-Offs	(8)	(4)
Recoveries	4	7
Credit Loss Expense (Benefit)	(274)	0
Balance end of period	6,566	8,339
Impact of CECL Adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance beginning of period	(1,495)
Balance end of period		(1,495)
Residential real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance beginning of period	2,417	2,068
Charge-Offs	0	0
Recoveries	1	0
Credit Loss Expense (Benefit)	347	349
Balance end of period	2,520	2,417
Residential real estate | Impact of CECL Adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance beginning of period	(245)
Balance end of period		(245)
Residential real estate | Non-revolving residential real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance beginning of period	2,294
Charge-Offs	0
Recoveries	1
Credit Loss Expense (Benefit)	336
Balance end of period	2,361	2,294
Residential real estate | Non-revolving residential real estate | Impact of CECL Adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance beginning of period	(270)
Balance end of period		(270)
Residential real estate | Revolving residential real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance beginning of period	123
Charge-Offs	0
Recoveries	0
Credit Loss Expense (Benefit)	11
Balance end of period	159	123
Residential real estate | Revolving residential real estate | Impact of CECL Adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance beginning of period	25
Balance end of period		25
Construction real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance beginning of period	1,032	837
Charge-Offs	0	0
Recoveries	0	0
Credit Loss Expense (Benefit)	(526)	195
Balance end of period	1,198	1,032
Construction real estate | Impact of CECL Adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance beginning of period	692
Balance end of period		692
Construction real estate | Commercial construction real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance beginning of period	611
Charge-Offs	0
Recoveries	0
Credit Loss Expense (Benefit)	(558)
Balance end of period	1,035	611
Construction real estate | Commercial construction real estate | Impact of CECL Adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance beginning of period	982
Balance end of period		982
Construction real estate | Residential construction real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance beginning of period	421
Charge-Offs	0
Recoveries	0
Credit Loss Expense (Benefit)	32
Balance end of period	163	421
Construction real estate | Residential construction real estate | Impact of CECL Adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance beginning of period	(290)
Balance end of period		(290)
Commercial real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance beginning of period	3,935	4,122
Charge-Offs	0	0
Recoveries	0	0
Credit Loss Expense (Benefit)	28	(187)
Balance end of period	2,426	3,935
Commercial real estate | Impact of CECL Adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance beginning of period	(1,537)
Balance end of period		(1,537)
Commercial real estate | Non-residential commercial real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance beginning of period	2,931
Charge-Offs	0
Recoveries	0
Credit Loss Expense (Benefit)	8
Balance end of period	2,182	2,931
Commercial real estate | Non-residential commercial real estate | Impact of CECL Adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance beginning of period	(757)
Balance end of period		(757)
Commercial real estate | Multi-family residential real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance beginning of period	1,004
Charge-Offs	0
Recoveries	0
Credit Loss Expense (Benefit)	20
Balance end of period	244	1,004
Commercial real estate | Multi-family residential real estate | Impact of CECL Adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance beginning of period	(780)
Balance end of period		(780)
Commercial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance beginning of period	301	275
Charge-Offs	0	(1)
Recoveries	0	2
Credit Loss Expense (Benefit)	(140)	25
Balance end of period	352	301
Commercial | Impact of CECL Adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance beginning of period	191
Balance end of period		191
Consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance beginning of period	10	11
Charge-Offs	(8)	(3)
Recoveries	3	5
Credit Loss Expense (Benefit)	5	(3)
Balance end of period	5	10
Consumer | Impact of CECL Adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance beginning of period	(5)
Balance end of period		(5)
Municipal
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance beginning of period	95	86
Charge-Offs	0	0
Recoveries	0	0
Credit Loss Expense (Benefit)	12	9
Balance end of period	65	95
Municipal | Impact of CECL Adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance beginning of period	(42)
Balance end of period		(42)
Unallocated
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance beginning of period	549	937
Charge-Offs	0	0
Recoveries	0	0
Credit Loss Expense (Benefit)	0	(388)
Balance end of period	0	549
Unallocated | Impact of CECL Adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance beginning of period	$ (549)
Balance end of period		$ (549)