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Note 7 - Segment Information (Details) (Banking [Member]) | 3 Months Ended
--- | ---
Sep. 30, 2013 | Sep. 30, 2012
Banking [Member] |  |
Note 7 - Segment Information (Details) [Line Items] |  |
Percentage of Revenue | 90.20% | 91.00%

X
- Details
Name: | ovbc_Note7SegmentInformationDetailsLineItems
Namespace Prefix: | ovbc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | ovbc_PercentageOfRevenue
Namespace Prefix: | ovbc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration