Available for Sale Securities - Summary of Amortized Costs and Fair Value of Securities Available-for-sale (Detail) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Marketable Securities [Line Items]
Securities Available for Sale, Amortized Cost	$ 138,416	$ 112,246
Securities Available for Sale, Gross Unrealized Gains	36	888
Securities Available for Sale, Gross Unrealized Losses	(11,776)	(694)
Securities Available for Sale, Fair Value	126,676	112,440
U.S. Treasury notes [Member]
Marketable Securities [Line Items]
Securities Available for Sale, Amortized Cost	29,555	19,501
Securities Available for Sale, Gross Unrealized Gains	0	8
Securities Available for Sale, Gross Unrealized Losses	(2,227)	(25)
Securities Available for Sale, Fair Value	27,328	19,484
Obligations of states and political subdivisions [Member]
Marketable Securities [Line Items]
Securities Available for Sale, Amortized Cost	21,418	20,758
Securities Available for Sale, Gross Unrealized Gains	17	207
Securities Available for Sale, Gross Unrealized Losses	(2,889)	(205)
Securities Available for Sale, Fair Value	18,546	20,760
Government-sponsored Mortgage-backed Securities [Member]
Marketable Securities [Line Items]
Securities Available for Sale, Amortized Cost	80,261	64,049
Securities Available for Sale, Gross Unrealized Gains	19	563
Securities Available for Sale, Gross Unrealized Losses	(6,579)	(463)
Securities Available for Sale, Fair Value	73,701	64,149
Asset-backed securities [Member]
Marketable Securities [Line Items]
Securities Available for Sale, Amortized Cost	5,723	6,479
Securities Available for Sale, Gross Unrealized Gains	0	45
Securities Available for Sale, Gross Unrealized Losses	(71)	(1)
Securities Available for Sale, Fair Value	5,652	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	(10)
Securities Available for Sale, Fair Value	$ 1,449	$ 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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Amount, before tax, of unrealized loss 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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Amount of 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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