Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Interest and dividend income:
Loans, including fees	$ 33,635	$ 33,592	$ 36,329
Securities:
Taxable	1,717us-gaap_InterestIncomeSecuritiesTaxable	1,339us-gaap_InterestIncomeSecuritiesTaxable	1,608us-gaap_InterestIncomeSecuritiesTaxable
Tax exempt	555	570	590
Dividends	312us-gaap_DividendIncomeOperating	322us-gaap_DividendIncomeOperating	279us-gaap_DividendIncomeOperating
Other interest	136us-gaap_OtherInterestAndDividendIncome	135us-gaap_OtherInterestAndDividendIncome	195us-gaap_OtherInterestAndDividendIncome
	36,355	35,958	39,001
Interest expense:
Deposits	2,236us-gaap_InterestExpenseDeposits	2,917us-gaap_InterestExpenseDeposits	5,064us-gaap_InterestExpenseDeposits
Other borrowed funds	474	391	493
Subordinated debentures	165	265	789
	2,875us-gaap_InterestExpense	3,573us-gaap_InterestExpense	6,346us-gaap_InterestExpense
Net interest income	33,480us-gaap_InterestIncomeExpenseNet	32,385us-gaap_InterestIncomeExpenseNet	32,655us-gaap_InterestIncomeExpenseNet
Provision for loan losses	2,787us-gaap_ProvisionForLoanAndLeaseLosses	477us-gaap_ProvisionForLoanAndLeaseLosses	1,583us-gaap_ProvisionForLoanAndLeaseLosses
Net interest income after provision for loan losses	30,693	31,908	31,072
Noninterest income:
Service charges on deposit accounts	1,627	1,802	1,831
Trust fees	223	210	199
Income from bank owned life insurance and annuity assets	672	1,176	782
Mortgage banking income	228	506	626
Electronic refund check / deposit fees	3,133ovbc_ElectronicRefundCheckDepositFees	2,556ovbc_ElectronicRefundCheckDepositFees	2,289ovbc_ElectronicRefundCheckDepositFees
Debit / credit card interchange income	2,174	1,963	1,700
Gain (loss) on other real estate owned	88us-gaap_ImpairmentOfRealEstate	(577)us-gaap_ImpairmentOfRealEstate	(331)us-gaap_ImpairmentOfRealEstate
Gain on sale of ProAlliance Corporation	810us-gaap_GainLossOnSaleOfBusiness
Other	813	997	1,206
	9,793us-gaap_NoninterestIncome	8,518us-gaap_NoninterestIncome	8,483us-gaap_NoninterestIncome
Noninterest expense:
Salaries and employee benefits	17,878us-gaap_LaborAndRelatedExpense	17,570us-gaap_LaborAndRelatedExpense	17,418us-gaap_LaborAndRelatedExpense
Occupancy	1,585us-gaap_OccupancyNet	1,573us-gaap_OccupancyNet	1,565us-gaap_OccupancyNet
Furniture and equipment	757us-gaap_EquipmentExpense	902us-gaap_EquipmentExpense	954us-gaap_EquipmentExpense
FDIC insurance	483	490	755
Data processing	1,127	1,052	1,021
Foreclosed assets	185us-gaap_ForeclosedRealEstateExpense	482us-gaap_ForeclosedRealEstateExpense	446us-gaap_ForeclosedRealEstateExpense
Other	7,278us-gaap_OtherNoninterestExpense	7,306us-gaap_OtherNoninterestExpense	7,582us-gaap_OtherNoninterestExpense
	29,293us-gaap_NoninterestExpense	29,375us-gaap_NoninterestExpense	29,741us-gaap_NoninterestExpense
Income before income taxes	11,193	11,051	9,814
Provision for income taxes	3,120us-gaap_IncomeTaxExpenseBenefit	2,939us-gaap_IncomeTaxExpenseBenefit	2,762us-gaap_IncomeTaxExpenseBenefit
NET INCOME	8,073us-gaap_NetIncomeLoss	8,112us-gaap_NetIncomeLoss	7,052us-gaap_NetIncomeLoss
Earnings per share (in Dollars per share)	$ 1.97us-gaap_EarningsPerShareBasic	$ 2.00us-gaap_EarningsPerShareBasic	$ 1.75us-gaap_EarningsPerShareBasic
Other Real Estate Owned [Member]
Noninterest income:
Gain (loss) on other real estate owned	$ 113	$ (692)	$ (150)

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