Condensed Parent Company Financial Information - Summary of Condensed Statements of Cash Flows (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 13,313	$ 10,837
Adjustments to reconcile net income to net cash provided by operating activities:
Other assets and liabilities	940	363
Net cash provided by operating activities	14,391	15,017
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases, equity securities	(131)
Net cash used in investing activities	(183,458)	(57,985)
CASH FLOWS FROM FINANCING ACTIVITIES
Cash dividends paid	(3,526)	(3,331)
Net cash provided by financing activities	11,830	104,973
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(157,237)	62,005
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	243,657	181,652
CASH AND CASH EQUIVALENTS AT END OF YEAR	86,420	243,657
Parent Company [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	13,313	10,837
Adjustments to reconcile net income to net cash provided by operating activities:
Equity earnings in subsidiary, net of dividends	(9,680)	(6,932)
Other assets and liabilities	(27)	(22)
Net cash provided by operating activities	3,606	3,883
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases, equity securities	(131)
Net cash used in investing activities	(131)
CASH FLOWS FROM FINANCING ACTIVITIES
Cash dividends paid	(3,526)	(3,331)
Purchase of treasury stock	(388)	(939)
Net cash provided by financing activities	(3,914)	(4,270)
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(439)	(387)
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	1,244	1,631
CASH AND CASH EQUIVALENTS AT END OF YEAR	$ 805	$ 1,244