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LOANS AND ALLOWANCE FOR CREDIT LOSSES, Credit Quality Indicators (Details) $ in Thousands | Jun. 30, 2025 USD ($)
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CARES Act [Member] |
Credit Quality Indicators [Abstract] |
Aggregate borrowing amount | $ 1,000

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- References No definition available. + Details
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Namespace Prefix: | ovbc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Minimum loan balance for impaired loans on nonaccrual status or nonperforming in nature. + References No definition available. + Details
Name: | ovbc_MinimumLoanBalanceForLoansEvaluatedByRiskCategories
Namespace Prefix: | ovbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
Name: | us-gaap_LoanRestructuringModificationNameAxis=ovbc_CARESActMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |