Total amount of loans that have been modified but are not troubled debt restructurings.

No definition available.

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

- Definition

The cumulative number of financing receivables that have been modified but are not troubled debt restructurings.

+ References

No definition available.

+ Details

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

- Definition

The number of financing receivables that have been modified but are not troubled debt restructurings.

+ References

No definition available.

+ Details

Name:	ovbc_FinancingReceivableModificationsNumberOfContractsNonTroubleDebtRestructurings
Namespace Prefix:	ovbc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	ovbc_FinancingReceivableModificationsTroubledDebtRestructuredLoansAbstract
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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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Namespace Prefix:	ovbc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524

+ Details

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

- Definition

Amount, after allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919230-210447

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(3))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522

+ Details

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Balance Type:	debit
Period Type:	instant

- Details

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LOANS AND ALLOWANCE FOR LOAN LOSSES, TDRs Pre-modification and Post-modification (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021 USD ($) Loan	Sep. 30, 2020 Loan	Sep. 30, 2021 USD ($) Loan	Sep. 30, 2020 Loan	Dec. 31, 2020 USD ($)
Troubled Debt Restructuring Loan Modifications [Abstract]
Number of loan modifications \| Loan	0	0	0	0
Aggregate loan balances	$ 839,069		$ 839,069		$ 841,504
CARES Act [Member]
Troubled Debt Restructuring Loan Modifications [Abstract]
Total number of loans modified related to COVID 19 \| Loan			674
Total Loans Modified, Non-trouble Debt Restructuring	130,365		$ 130,365
Number of remaining loans modified related to COVID 19 \| Loan			18
Aggregate loan balances	156		$ 156
Aggregate loan amount that are reviewed risk categories	$ 1,000		$ 1,000