Securities - Summary of Amortized Cost and Fair Value of Debt Securities (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Available-for-sale
Due in one year or less, Amortized Cost	$ 5,966
Due after one through five years, Amortized Cost	64,574
Due after five through ten years, Amortized Cost	24,930
Due after ten years, Amortized Cost	69,235
Amortized Cost, Available-for-sale	164,705	$ 132,392
Due in one year or less, Fair Value	5,790
Due after one through five years, Fair Value	60,342
Due after five through ten years, Fair Value	22,979
Due after ten years, Fair Value	60,958
Total debt securities available-for-sale, Fair Value	150,069	131,708
Held-to-maturity
Due in one year or less, Amortized Cost	2,497
Due after one through five years, Amortized cost	7,412
Due after five through ten years, Amortized Cost	4,761
Due after ten years, Amortized Cost	232,731
Amortized Cost, Held-to-maturity	247,401	174,808
Due in one year or less, Fair Value	2,418
Due after one through five years, Fair Value	6,794
Due after five through ten years, Fair Value	4,155
Due after ten years, Fair Value	198,587
Total debt securities held-to-maturity, Fair Value	$ 211,954	$ 174,528