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Securities Available-for-Sale - Schedule of amortized cost and fair value of securities available-for-sale (Detail) - USD ($) $ in Thousands	Jun. 30, 2023		Dec. 31, 2022
Amortized Cost	$ 123,474		$ 120,401
Gross Unrealized Gains	229		180
Gross Unrealized Losses	(13,807)		(14,481)
Fair Value	109,896		106,100
U.S. Government-sponsored enterprises obligations [Member]
Amortized Cost	2,178		2,191
Gross Unrealized Losses	(338)		(365)
Fair Value	1,840		1,826
U.S. Government agency small business administration pools guaranteed by SBA [Member]
Amortized Cost	8,965	[1]	9,475
Gross Unrealized Losses	(1,177)		(1,116)
Fair Value	7,788	[1]	8,359
Collateralized mortgage obligations issued by the FHLMC, FNMA and GNMA [Member]
Amortized Cost	6,594	[1]	6,922
Gross Unrealized Gains			8
Gross Unrealized Losses	(730)		(708)
Fair Value	5,864	[1]	6,222
Residential mortgage backed securities [Member]
Amortized Cost	26,144	[1]	26,390
Gross Unrealized Losses	(4,472)		(4,567)
Fair Value	21,672	[1]	21,823
Municipal bonds [Member]
Amortized Cost	70,870		69,373
Gross Unrealized Gains	229		172
Gross Unrealized Losses	(5,958)		(7,129)
Fair Value	65,141		62,416
Corporate debt [Member]
Amortized Cost	500		500
Gross Unrealized Losses	(15)		(3)
Fair Value	485		497
Corporate subordinated debt [Member]
Amortized Cost	8,223		5,550
Gross Unrealized Losses	(1,117)		(593)
Fair Value	$ 7,106		$ 4,957
[1] Actual maturities for these debt securities are dependent upon the interest rate environment and prepayments on the underlying loans.

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- Definition

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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