No authoritative reference available.

No definition available.

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- Definition

Minimum loan balance for impaired loans on nonaccrual status or nonperforming in nature.

+ References

No definition available.

+ Details

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- Definition

No authoritative reference available.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Amount of increase (decrease) to the expense related to estimated loss from loan and lease transactions.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	na
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- Definition

Amount of increase (decrease) of allowance reserve for credit loss.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.7(d))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 7

-Subparagraph d

-Article 9

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

-Subparagraph (c)(3)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524

+ Details

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- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 33

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953676-111524

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- Definition

The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 40

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18845-111554

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of allowance for credit losses related to recorded investment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5212-111524

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The increase (decrease) during the reporting period in loans that are classified as working capital and are not otherwise defined in the taxonomy.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Reflects the unfunded portion of contractual agreements to lend funds to borrowers for loans whose terms have been modified by troubled debt restructuring.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 40

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18794-111554

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Period Type:	instant

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Note 3 - Loans and Allowance for Loan Losses (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended			3 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2014
Note 3 - Loans and Allowance for Loan Losses (Details) [Line Items]
Allowance for Loan and Lease Losses, Write-offs	$ 0	$ 0	$ 536
Allowance for Loan and Lease Losses, Period Increase (Decrease)	623	(321)	2,169
Provision for Loan and Lease Losses Increase (Decrease)		(871)
Change in Troubled Debt Restructurings	43.60%ovbc_ChangeInTroubledDebtRestructurings
Financing Receivable, Modifications, Recorded Investment	18,097	12,606
Percentage of Loan Portfolio	100.00%ovbc_PercentageOfLoanPortfolio	100.00%ovbc_PercentageOfLoanPortfolio
Impaired Financing Receivable, Related Allowance	3,412	2,625	2,107
Minimum Loan Balance for Loans Evaluated by Risk Categories	500
Short-Term Interest Only-Payments [Member] \| Commercial and Industrial [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) [Line Items]
Financing Receivable, Modifications, Number of Contracts				2
Financing Receivable, Modifications, Recorded Investment				4,073
Extended at Interest Rate Lower Than Current Market Rate [Member] \| Commercial Real Estate Loans [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) [Line Items]
Financing Receivable, Modifications, Number of Contracts				1
Financing Receivable, Modifications, Recorded Investment				746
Non-Accrual [Member] \| Commercial Real Estate Loans [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) [Line Items]
Financing Receivable, Modifications, Recorded Investment	4,013
Troubled Debt Restructurings Performing According to Modified Terms [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) [Line Items]
Percentage of Loan Portfolio	76.00%	98.00%
Additional Impairment [Member] \| Troubled Debt Restructurings [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) [Line Items]
Impaired Financing Receivable, Related Allowance	2,998	1,511
Additional Impairment [Member] \| Commercial Real Estate Loans [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) [Line Items]
Impaired Financing Receivable, Related Allowance	1,340
Troubled Debt Restructurings [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) [Line Items]
Allowance for Loan and Lease Losses, Period Increase (Decrease)		7
Increase (Decrease) in Other Loans	5,491
Impaired Financing Receivable, Related Allowance		7
Loans and Leases Receivable, Impaired, Commitment to Lend	1,871	718
Commercial and Industrial [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) [Line Items]
Financing Receivable, Modifications, Number of Contracts	3
Financing Receivable, Modifications, Recorded Investment	$ 4,819
Unsecured [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) [Line Items]
Percentage of Loan Portfolio	5.66%	5.13%