Investment Securities - Summary of Maturities Available for Sale Investment Securities (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Amortized Cost Available for sale securities:
Less that one year	$ 0
One to five years	41,806
Five to ten years	0
Beyond ten years	427
Securities not due at a single maturity date	11,905
Total investment securities	54,138	$ 74,761
Fair Value Available for sale securities:
Less that one year	0
One to five years	41,687
Five to ten years	0
Beyond ten years	493
Securities not due at a single maturity date	11,805
Total investment securities	53,985	74,892
Amortized Cost Held to Maturity
Less that one year	0
One to five years	23,701
Five to ten years	30,349
Beyond ten years	22,374
Securities not due at a single maturity date	41,355
Total investment securities	117,779
Fair Value Held to Maturity
Less that one year	0
One to five years	23,371
Five to ten years	29,560
Beyond ten years	20,806
Securities not due at a single maturity date	38,599
Total investment securities	$ 112,336	$ 28,216