Available for Sale Securities - Summary of Amortized Costs and Fair Values of Securities Available-for-sale, by Contractual Maturity (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Due in one year or less	$ 2,019
Due after one through 5 years	24,407
Due after 5 through 10 years	13,252
Due after 10 years	6,030
Total debt and other securities, Fair Value	45,708
Total	114,492	$ 112,440
Due in one year or less	2,036
Due after one through 5 years	26,766
Due after 5 through 10 years	15,880
Due after 10 years	7,753
Total debt and other securities, Amortized Cost	52,435
Total	130,233
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Total debt and other securities, Fair Value	64,267
Total debt and other securities, Amortized Cost	73,235
Asset-backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Total debt and other securities, Fair Value	4,517
Total	4,517	$ 6,523
Total debt and other securities, Amortized Cost	$ 4,563