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Note 7 - Segment Information (Details) (Banking [Member])	3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Banking [Member]
Note 7 - Segment Information (Details) [Line Items]
Percentage of Revenue	88.60%	89.10%

X

- Details

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Namespace Prefix:	ovbc_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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- Definition

No authoritative reference available.

+ References

No definition available.

+ Details

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Namespace Prefix:	ovbc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration