Annual decrease in callable premium.

No definition available.

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

- Definition

Callable premium at issuance

+ References

No definition available.

+ Details

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

- References

No definition available.

+ Details

Name:	ovbc_Note8SubordinatedDebenturesandTrustPreferredSecuritiesDetailsLineItems
Namespace Prefix:	ovbc_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Percent of total amount in redemption

+ References

No definition available.

+ Details

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

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash inflow from issuance of preferred stocks by a business trust or other special purpose entity, mainly established by a bank holding entity, to third party investors. The trust's assets are deeply subordinated debentures of the bank holding entity. Most trust preferred securities are subject to a mandatory redemption upon the repayment of the debentures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3255-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

+ Details

Name:	us-gaap_ProceedsFromIssuanceOfTrustPreferredSecurities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Note 8 - Subordinated Debentures and Trust Preferred Securities (Details) - USD ($) $ in Thousands	Mar. 07, 2013	Mar. 22, 2007	Sep. 07, 2000	Dec. 31, 2015	Dec. 31, 2014
Note 8 - Subordinated Debentures and Trust Preferred Securities (Details) [Line Items]
Proceeds from Issuance of Trust Preferred Securities (in Dollars)		$ 8,500	$ 5,000
Debt Instrument, Interest Rate, Stated Percentage		6.58%	10.60%	2.19%	1.92%
Callable Premium at Issuance			105.30%
Annual Decrease in Callable Premium			0.53%
Redemption of Subordinated Debentures Percent of Total Amount	104.24%
London Interbank Offered Rate (LIBOR) [Member]
Note 8 - Subordinated Debentures and Trust Preferred Securities (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate		1.68%