Available for Sale Securities - Summary of Gross Unrealized Losses on Securities Available-for-sale and Fair Values (Detail) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Fair Value	$ 36,147	$ 1,740
Unrealized Loss	(287)	(5)
Fair Value	52,884	57,441
Unrealized Loss	(9,845)	(9,799)
Fair Value	89,031	59,181
Unrealized Loss	(10,132)	(9,804)
Obligations of States and Political Subdivisions [Member]
Debt Securities, Available-for-sale [Line Items]
Fair Value	260	0
Unrealized Loss	0	0
Fair Value	13,772	13,889
Unrealized Loss	(2,818)	(2,815)
Fair Value	14,032	13,889
Unrealized Loss	(2,818)	(2,815)
Government-sponsored Mortgage-backed securities [Member]
Debt Securities, Available-for-sale [Line Items]
Fair Value	34,851	0
Unrealized Loss	(285)	0
Fair Value	38,572	40,983
Unrealized Loss	(7,025)	(6,960)
Fair Value	73,423	40,983
Unrealized Loss	(7,310)	(6,960)
Asset-backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Fair Value	1,036	1,740
Unrealized Loss	(2)	(5)
Fair Value	540	1,832
Unrealized Loss	(2)	(16)
Fair Value	1,576	3,572
Unrealized Loss	$ (4)	(21)
Certificates of Deposit [Member]
Debt Securities, Available-for-sale [Line Items]
Fair Value		0
Unrealized Loss		0
Fair Value		737
Unrealized Loss		(8)
Fair Value		737
Unrealized Loss		$ (8)