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Investment Securities - Summary of Amortized Cost and Fair Value by Contractual Maturity (Detail) - USD ($) $ in Thousands | Jun. 30, 2023 | Dec. 31, 2022
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Investments, Debt and Equity Securities [Abstract] |  |
Amortized Cost, 1 year or less | $ 300 |
Amortized Cost, Due after one year through five years | 7,684 |
Amortized Cost, Due after five years through ten years | 14,908 |
Amortized Cost, Due after ten years | 25,485 |
Amortized Cost, Mortgage-backed securities and Collateralized Mortgage Obligations | 42,946 |
Amortized Cost | 91,323 | $ 86,920
Fair Value, 1 year or less | 296 |
Fair Value, Due after one year through five years | 7,506 |
Fair Value, Due after five years through ten years | 14,027 |
Fair Value, Due after ten years | 22,793 |
Fair Value, Mortgage-backed securities and Collateralized Mortgage Obligations | 38,998 |
Fair Value | 83,620 | 78,813
Held to Maturity Securities Amortized Cost, 1 year or less | 0 |
Held to Maturity Securities Amortized Cost, Due after one year through five years | 6,000 |
Held to Maturity Securities Amortized Cost, Due after five years through ten years | 9,000 |
Held to Maturity Securities Amortized Cost, Due after ten year | 0 |
Mortgage-backed securities and Collateralized mortgage obligations | 23,806 |
Held-to-Maturity, Amortized Cost | 38,806 | 31,822
Held to Maturity Securities Fair Value, 1 year or less | 0 |
Held to Maturity Securities Fair Value, Due after one year through five years | 5,696 |
Held to Maturity Securities Fair Value, Due after five years through ten years | 7,522 |
Held to Maturity Securities Fair Value, Due after ten years | 0 |
Mortgage-backed securities and Collateralized mortgage obligations | 22,840 |
Held-to-maturity, Fair Value | $ 36,058 | $ 30,080

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