Loans - Summary of Loans (Detail) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024	Mar. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	$ 761,300	$ 737,790
Allowance for credit losses	(7,974)	(7,595)	$ (7,136)	$ (6,607)
Deferred loan fees, net	(60)	(149)
Net loans	753,266	730,046
Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	149,391	144,376
Allowance for credit losses	(3,154)	(2,919)	(2,224)	(1,737)
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	194,863	190,514
Allowance for credit losses	(1,707)	(1,681)	(1,612)	(1,637)
Commercial Lessors of Buildings [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	106,703	101,168
Allowance for credit losses	(1,240)	(1,141)	(1,344)	(1,200)
Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	70,198	64,262
Allowance for credit losses	(576)	(502)	(323)	(333)
Consumer Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	179,702	177,578
Allowance for credit losses	(758)	(812)	(1,068)	(1,107)
Home Equity Line of Credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	45,945	44,971
Allowance for credit losses	(193)	(205)	(284)	(288)
Consumer Installment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	9,420	9,645
Allowance for credit losses	(89)	(92)	(74)	(76)
Consumer Indirect [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	5,078	5,276
Allowance for credit losses	$ (257)	$ (243)	$ (207)	$ (229)