Securities Available-for-Sale - Schedule of amortized cost and fair value of securities available-for-sale (Detail) - USD ($) $ in Thousands	Dec. 31, 2022		Dec. 31, 2021
Amortized Cost	$ 120,401		$ 90,577
Gross Unrealized Gains	180		1,556
Gross Unrealized Losses	(14,481)		(768)
Fair Value	106,100		91,365
U.S. Government-sponsored enterprises obligations [Member]
Amortized Cost	2,191		6,098
Gross Unrealized Losses	(365)		(127)
Fair Value	1,826		5,971
U.S. Government agency small business administration pools guaranteed by SBA [Member]
Amortized Cost	9,475	[1]	5,059
Gross Unrealized Gains			22
Gross Unrealized Losses	(1,116)		(36)
Fair Value	8,359	[1]	5,045
Collateralized mortgage obligations issued by the FHLMC, FNMA and GNMA [Member]
Amortized Cost	6,922	[1]	3,400
Gross Unrealized Gains	8		1
Gross Unrealized Losses	(708)		(69)
Fair Value	6,222	[1]	3,332
Residential mortgage backed securities [Member]
Amortized Cost	26,390	[1]	23,784
Gross Unrealized Gains			32
Gross Unrealized Losses	(4,567)		(484)
Fair Value	21,823	[1]	23,332
Municipal bonds [Member]
Amortized Cost	69,373		49,164
Gross Unrealized Gains	172		1,501
Gross Unrealized Losses	(7,129)		(52)
Fair Value	62,416		50,613
Corporate debt [Member]
Amortized Cost	500
Gross Unrealized Losses	(3)
Fair Value	497
Corporate subordinated debt [Member]
Amortized Cost	5,550		3,072
Gross Unrealized Losses	(593)
Fair Value	$ 4,957		$ 3,072

[1] Actual maturities for these debt securities are dependent upon the interest rate environment and prepayments on the underlying loans.