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Securities - Additional Information (Detail) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2021 | Dec. 31, 2020
Schedule of Available-for-sale Securities [Line Items] |  |
Investments pledged, carrying value | $ 77,100 | $ 83,200
Other securities | 4,905 | 5,939
Federal Home Loan Bank of Cincinnati and Indianapolis Stock [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Other securities | 4,500 | 5,800
Ohio Equity Fund for Housing Limited Partnership [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Other securities | $ 357 | $ 151
Minimum [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Underwater security | 10 years |
Loss position existed | 3 years |

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