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Investment Securities and Other Investments - Summary of Amortized Cost and Fair Values of Investment Securities (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available for sale, Amortized Cost	$ 378,741	$ 108,661
Available for sale, Gross Unrealized Gains	1,513	1,423
Available for sale, Gross Unrealized Losses	(6,722)	(609)
Securities available for sale	373,532	109,475
State and Municipal [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available for sale, Amortized Cost	51,341	14,069
Available for sale, Gross Unrealized Gains	302	258
Available for sale, Gross Unrealized Losses	(530)	(68)
Securities available for sale	51,113	14,259
U.S. Treasury and Agencies [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available for sale, Amortized Cost	65,680	2,500
Available for sale, Gross Unrealized Gains	0	0
Available for sale, Gross Unrealized Losses	(1,614)	(91)
Securities available for sale	64,066	2,409
Mortgage Backed Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available for sale, Amortized Cost	222,968	72,337
Available for sale, Gross Unrealized Gains	403	696
Available for sale, Gross Unrealized Losses	(4,261)	(398)
Securities available for sale	219,110	72,635
Corporate Bonds [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available for sale, Amortized Cost	38,752	19,755
Available for sale, Gross Unrealized Gains	808	469
Available for sale, Gross Unrealized Losses	(317)	(52)
Securities available for sale	$ 39,243	$ 20,172

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