Investment Securities and Other Investments - Summary of Investments Classified by Contractual Maturity Date (Detail) $ in Thousands	Mar. 31, 2023 USD ($)
Schedule of Investments [Abstract]
Debt Securities Available for Sale, Amortized Cost, Due in one year or less	$ 1,502
Debt Securities Available for Sale, Amortized Cost, Due after one year through five years	52,227
Debt Securities Available for Sale, Amortized Cost, Due after five years through ten years	129,729
Debt Securities Available for Sale, Amortized Cost, Due after ten years	222,182
Total	405,640
Debt Securities Available for Sale, Fair Value, Due in one year or less	1,499
Debt Securities Available for Sale, Fair Value, Due after one year through five years	47,470
Debt Securities Available for Sale, Fair Value, Due after five years through ten years	114,220
Debt Securities Available for Sale, Fair Value, Due after ten years	188,801
Total	$ 351,990

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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