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LOANS AND ALLOWANCE FOR CREDIT LOSSES, Impaired Loans (Details) - Residential Real Estate [Member] $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 USD ($) Property | Dec. 31, 2023 USD ($) Property
Loans, Other Information [Abstract] |  |
Number of other real estate owned | Property | 0 | 68
Mortgage loans in process of foreclosure | $ | $ 196 | $ 348

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- Definition Represents the number of other real estate owned by the entity. + References No definition available. + Details
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Namespace Prefix: | ovbc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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

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- Definition Recorded investment of consumer mortgage loan receivables secured by residential real estate properties for which formal foreclosure proceedings are in process. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 35 -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-35 + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | debit
Period Type: | instant

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |