Available for Sale Securities - Summary of Amortized Costs and Fair Value of Securities Available-for-sale (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Marketable Securities [Line Items]
Securities Available for Sale, Amortized Cost	$ 130,233	$ 112,246
Securities Available for Sale, Gross Unrealized Gains	6	888
Securities Available for Sale, Gross Unrealized Losses	(15,747)	(694)
Available for sale securities	114,492	112,440
U.S. Treasury notes [Member]
Marketable Securities [Line Items]
Securities Available for Sale, Amortized Cost	29,597	19,501
Securities Available for Sale, Gross Unrealized Gains	0	8
Securities Available for Sale, Gross Unrealized Losses	(2,970)	(25)
Available for sale securities	26,627	19,484
Obligations of states and political subdivisions [Member]
Marketable Securities [Line Items]
Securities Available for Sale, Amortized Cost	21,379	20,758
Securities Available for Sale, Gross Unrealized Gains	6	207
Securities Available for Sale, Gross Unrealized Losses	(3,729)	(205)
Available for sale securities	17,656	20,760
Government-sponsored Mortgage-backed Securities [Member]
Marketable Securities [Line Items]
Securities Available for Sale, Amortized Cost	73,235	64,049
Securities Available for Sale, Gross Unrealized Gains	0	563
Securities Available for Sale, Gross Unrealized Losses	(8,968)	(463)
Available for sale securities	64,267	64,149
Asset-backed securities [Member]
Marketable Securities [Line Items]
Securities Available for Sale, Amortized Cost	4,563	6,479
Securities Available for Sale, Gross Unrealized Gains	0	45
Securities Available for Sale, Gross Unrealized Losses	(46)	(1)
Available for sale securities	4,517	6,523
Certificates of deposit [Member]
Marketable Securities [Line Items]
Securities Available for Sale, Amortized Cost	1,459	1,459
Securities Available for Sale, Gross Unrealized Gains	0	65
Securities Available for Sale, Gross Unrealized Losses	(34)	0
Available for sale securities	$ 1,425	$ 1,524

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).

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