Securities - Summary of Amortized Cost and Fair Value of Debt Securities (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Available-for-sale
Due in one year or less, Amortized Cost	$ 602
Due after one through five years, Amortized Cost	49,847
Due after five through ten years, Amortized Cost	33,238
Due after ten years, Amortized Cost	66,857
Amortized Cost, Available-for-sale	150,544	$ 132,392
Due in one year or less, Fair Value	603
Due after one through five years, Fair Value	48,097
Due after five through ten years, Fair Value	31,765
Due after ten years, Fair Value	62,857
Total debt securities available-for-sale, Fair Value	143,322	131,708
Held-to-maturity
Due in one year or less, Amortized Cost	2,494
Due after one through five years, Amortized cost	7,390
Due after five through ten years, Amortized Cost	3,890
Due after ten years, Amortized Cost	232,527
Amortized Cost, Held to maturity	246,301	174,808
Due after five through ten years, Fair Value	3,630
Due after ten years, Fair Value	219,587
Total debt securities held-to-maturity, Fair Value	232,675	$ 174,528
Due in one year or less, Fair Value	2,432
Due after one through five years, Fair Value	$ 7,026