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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Basis of Presentation (Details)	Mar. 31, 2024 Subsidiaries
BASIS OF PRESENTATION [Abstract]
Number of wholly-owned subsidiaries	1

X

- References

No definition available.

+ Details

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X

- Definition

Represents the number of wholly-owned subsidiaries.

+ References

No definition available.

+ Details

Name:	ovbc_NumberOfWhollyOwnedSubsidiaries
Namespace Prefix:	ovbc_
Data Type:	xbrli:integerItemType
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Period Type:	instant