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Securities - Amortized Cost and Fair Value of Securities by Contractual Maturity (Detail) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
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Investments, Debt and Equity Securities [Abstract] |  |
Amortized Cost, Due in one year or less | $ 5,990 |
Amortized Cost, Due from one to five years | 44,482 |
Amortized Cost, Due from five to ten years | 70,413 |
Amortized Cost, Due after ten years | 295,714 |
Amortized Cost, Mortgage-backed securities in government sponsored entities | 265,752 |
Amortized Cost, Total securities available for sale | 682,351 | $ 541,297
Fair Value, Due in one year or less | 5,796 |
Fair Value, Due from one to five years | 41,304 |
Fair Value, Due from five to ten years | 64,687 |
Fair Value, Due after ten years | 266,490 |
Fair Value, Mortgage-backed securities in government sponsored entities | 237,125 |
Fair Value, Total securities available for sale | $ 615,402 | $ 559,874

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