Available for Sale Securities - Summary of Amortized Costs and Fair Values of Securities Available-for-sale, by Contractual Maturity (Detail) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Due in one year or less	$ 718
Due after one through 5 years	260
Due after 5 through 10 years	10,777
Due after 10 years	2,277
Total debt and other securities, Fair Value	14,032
Total	103,356	$ 109,559
Due in one year or less	730
Due after one through 5 years	260
Due after 5 through 10 years	12,945
Due after 10 years	2,915
Total debt and other securities, Amortized Cost	16,850
Total	113,365
Government-sponsored Mortgage-backed securities [Member]
Debt Securities, Available-for-sale [Line Items]
Total debt and other securities, Fair Value	86,309
Total debt and other securities, Amortized Cost	93,499
Asset-backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Total debt and other securities, Fair Value	3,015
Total	3,015	$ 3,572
Total debt and other securities, Amortized Cost	$ 3,016