Investment and Equity Securities - Carrying Amounts and Fair Values of Securities Available for Sale (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	$ 365,088	$ 369,301
Available-for-sale Securities, Gross Unrealized Gains	707	495
Available-for-sale Securities, Gross Unrealized Losses	32,809	33,082
Securities available for sale	332,986	336,714
U.S. Treasury [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	32,961	54,984
Available-for-sale Securities, Gross Unrealized Gains	0
Available-for-sale Securities, Gross Unrealized Losses	3,067	3,479
Securities available for sale	29,894	51,505
U.S. Government Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	42,667	43,921
Available-for-sale Securities, Gross Unrealized Gains	97	66
Available-for-sale Securities, Gross Unrealized Losses	1,035	969
Securities available for sale	41,729	43,018
GSE - Mortgage-backed Securities and CMO's [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	165,561	137,346
Available-for-sale Securities, Gross Unrealized Gains	198	170
Available-for-sale Securities, Gross Unrealized Losses	12,970	13,729
Securities available for sale	152,789	123,787
Asset-backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	23,215	31,469
Available-for-sale Securities, Gross Unrealized Gains	407	244
Available-for-sale Securities, Gross Unrealized Losses	44	200
Securities available for sale	23,578	31,513
State and Political Subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	94,684	95,581
Available-for-sale Securities, Gross Unrealized Gains	5	15
Available-for-sale Securities, Gross Unrealized Losses	15,436	14,196
Securities available for sale	79,253	81,400
Corporate Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	6,000	6,000
Available-for-sale Securities, Gross Unrealized Gains	0
Available-for-sale Securities, Gross Unrealized Losses	257	509
Securities available for sale	$ 5,743	$ 5,491

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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