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Investment Securities and Other Investments - Summary of Investments Classified by Contractual Maturity Date (Detail) $ in Thousands | Dec. 31, 2020 USD ($)
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Schedule Of Investments [Abstract] |
Securities Available for Sale, Amortized Cost, Due in one year or less | $ 3,427
Securities Available for Sale, Amortized Cost, Due after one year through five years | 6,305
Securities Available for Sale, Amortized Cost, Due after five years through ten years | 32,003
Securities Available for Sale, Amortized Cost, Due after ten years | 66,926
Securities Available for Sale, Amortized Cost, Total | 108,661
Securities Available for Sale, Fair Value, Due in one year or less | 930
Securities Available for Sale, Fair Value, Due after one year through five years | 6,963
Securities Available for Sale, Fair Value, Due after five years through ten years | 34,057
Securities Available for Sale, Fair Value, Due after ten years | 67,525
Securities Available for Sale, Fair Value, Total | $ 109,475

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