Accumulated Other Comprehensive Loss - Schedule of Changes in Accumulated Other Comprehensive Income (Loss) by Component Net of Tax (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Unrealized holding loss on available-for-sale securities arising during the period, Pretax	$ (13,952)	$ (2,050)
Unrealized loss on securities transferred from available-for-sale to held to maturity, Pretax	289	86
Beginning balance, After-tax	(2,125)
Other comprehensive loss	(10,794)	(3,111)
Ending Balance, After-tax	(12,919)	(2,125)
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance, Pretax	(2,691)	1,249
Unrealized holding loss on available-for-sale securities arising during the period, Pretax	(13,952)	(2,050)
Unrealized loss on securities transferred from available-for-sale to held to maturity, Pretax		(1,976)
Amortization of held-to-maturity discount resulting from transfer, Pretax	289	86
Total other comprehensive loss, Pretax	(13,663)	(3,940)
Ending balance, Pretax	(16,354)	(2,691)
Beginning balance, Tax Effect	566	(263)
Unrealized holding loss on available-for-sale securities arising during the period, Tax Effect	2,930	432
Unrealized loss on securities transferred from available-for-sale to held to maturity, Tax Effect		415
Amortization of held-to-maturity discount resulting from transfer, Tax Effect	(61)	(18)
Total other comprehensive loss, Tax Effect	2,869	829
Ending Balance, Tax Effect	3,435	566
Beginning balance, After-tax	(2,125)	986
Unrealized holding loss on available-for-sale securities arising during the period, After-Tax	(11,022)	(1,618)
Unrealized loss on securities transferred from available-for-sale to held to maturity, After Tax		(1,561)
Amortization of held-to-maturity discount resulting from transfer, After-tax	228	68
Other comprehensive loss	(10,794)	(3,111)
Ending Balance, After-tax	$ (12,919)	$ (2,125)