Investment Securities and Other Investments - Summary of Investments Classified by Contractual Maturity Date (Detail) $ in Thousands	Dec. 31, 2021 USD ($)
Schedule Of Investments [Abstract]
Debt Securities Available for Sale, Amortized Cost, Due in one year or less	$ 953
Debt Securities Available for Sale, Amortized Cost, Due after one year through five years	25,492
Debt Securities Available for Sale, Amortized Cost, Due after five years through ten years	120,439
Debt Securities Available for Sale, Amortized Cost, Due after ten years	231,857
Total	378,741
Debt Securities Available for Sale, Fair Value, Due in one year or less	954
Debt Securities Available for Sale, Fair Value, Due after one year through five years	25,316
Debt Securities Available for Sale, Fair Value, Due after five years through ten years	119,942
Debt Securities Available for Sale, Fair Value, Due after ten years	227,320
Total	$ 373,532

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in sixth through tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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