2.4.0.8065 - Disclosure - NOTE 13 - COMMITMENTS AND CONTINGENCIES (Detail)truefalsefalse1false USDfalsefalse$Context_As_Of__30-Jun-2013http://www.sec.gov/CIK0000353191instant2013-06-30T00:00:000001-01-01T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$2false USDfalsefalse$Context_As_Of__31-Dec-2012http://www.sec.gov/CIK0000353191instant2012-12-31T00:00:000001-01-01T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1false 4us-gaap_LettersOfCreditOutstandingAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse47580004758000USD$falsetruefalse2truefalsefalse47130004713000USD$falsetruefalsexbrli:monetaryItemTypemonetaryThe total amount of the contingent obligation under letters of credit outstanding as of the reporting date.No definition available.false2Letters of Credit Outstanding, Amount2false 4novb_ReserveForUnfundedCommitmentsnovb_falsecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse146000146000USD$falsefalsefalse2truefalsefalse143000143000USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe amount of unfunded commitments for which the entity is obligated, to those certain receivables.No definition available.false2Reserve For Unfunded Commitments3false 4novb_CommitmentsSettlementReservesnovb_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse12600001260000USD$falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryThe amount of settlement commitments for which the entity is obligated, to those certain receivables.No definition available.false2Reserves for anticipated settlement4false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3false USDtruefalse$Context_As_Of__30-Jun-2013_LoansReceivableCategoryAxis_CollateralizedDebtObligationsMemberhttp://www.sec.gov/CIK0000353191instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseCollateralized Debt Obligationsnovb_LoansReceivableCategoryAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CollateralizedDebtObligationsMembernovb_LoansReceivableCategoryAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Collateralized Debt Obligations5false 4novb_PortionOfLoanPortfolioCollateralizedByRealEstatenovb_falsenainstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truetruefalse0.810.81falsefalsefalse2falsefalsefalse00falsefalsefalsenum:percentItemTypepurePercentage of loan portfolio based on carrying amount as of the balance sheet date of loans that have been collateralized by real estate.No definition available.false0Portion Of Loan Portfolio Collateralized By Real Estate6false 4us-gaap_ConstructionLoanus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse1853500018535000USD$falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryThis element represents the carrying value of a short-term real estate loan to finance building costs. The funds are disbursed as needed or in accordance with a prearranged plan; generally, a portion of the funds is disbursed at inception and the remainder as construction progresses. The money is repaid on completion of the project, usually from the proceeds of a mortgage loan. The rate is normally higher than the prime rate, and there is usually an origination fee. The effective yield on these loans tends to be high, and the lender has a security interest in the real property. Note that there are separate concepts for the current and noncurrent portions of long-term construction loans.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 210.5-02.19(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Audit and Accounting Guide (AAG) -Number AAG-DEP -Paragraph 52 -IssueDate 2006-05-01 -Chapter 8 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20 -Article 5 false2Construction Loan7false 4novb_LoanPortfolioPercentageOfConstructionLoansnovb_falsenainstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truetruefalse0.040.04falsefalsefalse2falsefalsefalse00falsefalsefalsenum:percentItemTypepurePercentage of loan portfolio that represents mortgage loans.No definition available.false0Loan Portfolio Percentage Of Construction Loans8false 4us-gaap_LoansReceivableCommercialRealEstateus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse319206000319206000USD$falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryAmount before allowance of commercial loans issued to businesses to acquire, develop, construct, improve, or refinance land or building. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans covered under loss sharing agreements.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5066-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 01-6 -Paragraph 13 -Subparagraph e -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. 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Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Subparagraph a -Article 9 Reference 5: 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(a)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(c)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Audit and Accounting Guide (AAG) -Number AAG-DEP -Paragraph 51, 52, 53 -IssueDate 2006-05-01 -Chapter 8 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. 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