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v3.19.1

Note 7 - Segment Information (Details Textual) | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Banking Segment, Percentage of Total Revenues | 90.58% | 88.27%

X
- Definition Represents the percentage of total revenues during the period attributable to the Banking segment. + References No definition available. + Details
Name: | ovbc_BankingSegmentPercentageOfTotalRevenues
Namespace Prefix: | ovbc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration