Condensed Parent Company Financial Information - Summary of Condensed Statements of Comprehensive Income (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Unrealized gain (loss) on equity securities	$ 15	$ (3)
Other income	836	799
NET INCOME	14,756	13,313
COMPREHENSIVE INCOME	17,405	2,519
Parent Company [Member]
Dividends on securities	9	7
Dividends from subsidiary	5,200	3,950
Unrealized gain (loss) on equity securities	15	(3)
Total income	5,224	3,954
Operating expenses	391	407
Income before taxes and undistributed equity income of subsidiary	4,833	3,547
Income tax benefit	74	86
Equity earnings in subsidiary, net of dividends	9,849	9,680
NET INCOME	14,756	13,313
COMPREHENSIVE INCOME	$ 17,405	$ 2,519