Loans - Summary of Loans (Detail) - USD ($) $ in Thousands	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	$ 722,006		$ 701,481
Allowance for credit losses	(10,587)	$ (7,136)	(6,607)	$ (6,559)	$ (6,307)	$ (6,838)
Deferred loan fees, net	(90)		(77)
Net loans	711,329		694,797
Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	143,950		152,125
Allowance for credit losses	(5,274)	(2,224)	(1,737)	(2,119)	(1,821)	(1,110)
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	194,637		190,702
Allowance for credit losses	(2,033)	(1,612)	(1,637)	(1,882)	(2,236)	(2,760)
Commercial Lessors of Buildings [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	96,235		82,687
Allowance for credit losses	(1,328)	(1,344)	(1,200)	(1,237)	(965)
Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	55,275		49,214
Allowance for credit losses	(326)	(323)	(333)	(283)	(271)	(803)
Consumer Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	171,198		166,891
Allowance for credit losses	(1,061)	(1,068)	(1,107)	(714)	(693)	(1,268)
Home Equity Line of Credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	44,331		43,269
Allowance for credit losses	(276)	(284)	(288)	(178)	(186)
Consumer Installment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	10,646		10,636
Allowance for credit losses	(74)	(74)	(76)	(52)	(47)	$ (233)
Consumer Indirect [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	5,734		5,957
Allowance for credit losses	$ (215)	$ (207)	$ (229)	$ (94)	$ (88)