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Investment Securities - Summary of Amortized Cost and Fair Value by Contractual Maturity (Detail) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
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Investments, Debt and Equity Securities [Abstract] |  |
Amortized Cost, 1 year or less | $ 377 |
Amortized Cost, Due after one year through five years | 5,423 |
Amortized Cost, Due after five years through ten years | 11,991 |
Amortized Cost, Due after ten years | 28,056 |
Amortized Cost, Mortgage-backed securities and Collateralized Mortgage Obligations | 50,283 |
Amortized Cost | 96,130 | $ 101,453
Fair Value, 1 year or less | 377 |
Fair Value, Due after one year through five years | 5,429 |
Fair Value, Due after five years through ten years | 11,814 |
Fair Value, Due after ten years | 27,275 |
Fair Value, Mortgage-backed securities, residential | 48,307 |
Fair Value | 93,202 | 103,783
Held to Maturity Securities Amortized Cost, Due after five years through ten years | 5,000 |
Held-to-Maturity, Amortized Cost | 5,000 |
Held to Maturity Securities Fair Value, Due after five years through ten years | 4,981 |
Held-to-maturity, Fair Value | $ 4,981 | $ 0

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