Investment Securities - Summary of Maturities Available for Sale Investment Securities (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Amortized Cost Available for sale securities:
One to five years	$ 14,131
Five to ten years	5,250
Beyond ten years	11,925
Securities not due at a single maturity date	29,081
Total available for sale securities	60,387	$ 54,183
Fair Value Available for sale securities:
One to five years	14,372
Five to ten years	5,324
Beyond ten years	11,912
Securities not due at a single maturity date	29,534
Total available for sale securities	$ 61,142	$ 55,093

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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