Investment Securities and Other Investments - Summary of Investments Classified by Contractual Maturity Date (Detail) $ in Thousands	Dec. 31, 2023 USD ($)
Schedule of Investments [Abstract]
Debt Securities Available for Sale, Amortized Cost, Due in one year or less	$ 3,210
Debt Securities Available for Sale, Amortized Cost, Due after one year through five years	40,828
Debt Securities Available for Sale, Amortized Cost, Due after five years through ten years	127,934
Debt Securities Available for Sale, Amortized Cost, Due after ten years	207,682
Total	379,654
Debt Securities Available for Sale, Fair Value, Due in one year or less	3,097
Debt Securities Available for Sale, Fair Value, Due after one year through five years	37,337
Debt Securities Available for Sale, Fair Value, Due after five years through ten years	109,682
Debt Securities Available for Sale, Fair Value, Due after ten years	170,965
Total	$ 321,081

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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