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 |