Investment Securities - Summary of Amortized Cost and Fair Value by Contractual Maturity (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Investments, Debt and Equity Securities [Abstract]
Amortized Cost, 1 year or less	$ 1,195
Amortized Cost, Due after one year through five years	5,442
Amortized Cost, Due after five years through ten years	12,006
Amortized Cost, Due after ten years	28,571
Amortized Cost, Mortgage-backed securities and Collateralized Mortgage Obligations	54,239
Amortized Cost	101,453	$ 121,408
Fair Value, 1 year or less	1,200
Fair Value, Due after one year through five years	5,593
Fair Value, Due after five years through ten years	12,400
Fair Value, Due after ten years	30,373
Fair Value, Mortgage-backed securities and Collateralized Mortgage Obligations	54,217
Fair Value	$ 103,783	$ 125,447

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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