2.4.0.8042 - Disclosure - NOTE 3 - LOANS (Detail)truefalsefalse1false USDfalsefalse$Context_6ME__30-Jun-2013http://www.sec.gov/CIK0000353191duration2013-01-01T00:00:002013-06-30T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$2false USDfalsefalse$Context_6ME__30-Jun-2012http://www.sec.gov/CIK0000353191duration2012-01-01T00:00:002012-06-30T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$3false USDfalsefalse$Context_As_Of__31-Dec-2012http://www.sec.gov/CIK0000353191instant2012-12-31T00:00:000001-01-01T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1false 4us-gaap_LoansPledgedAsCollateralus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse101239000101239000USD$falsetruefalse2falsefalsefalse00falsefalsefalse3truefalsefalse116929000116929000USD$falsetruefalsexbrli:monetaryItemTypemonetaryCarrying amount as of the balance sheet date of loans that have been pledged as collateral for borrowings. If the secured party has the right by contract or custom to sell or re-pledge the collateral, then the debtor reclassifies that asset and report that asset in its statement of financial position separately from other assets not so encumbered.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5086-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6467456&loc=d3e113888-111728 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 140 -Paragraph 15 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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. false2Loans Pledged as Collateral2false 4us-gaap_LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoansus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse135000135000falsefalsefalse2truefalsefalse357000357000falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryReflects the amount of additional interest income that would have been recorded if impaired or nonperforming loans were instead current, in compliance with their original terms, and outstanding throughout the reporting period or since origination (if held for part of the period).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 114 -Paragraph 20 -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher OTS -Name Federal Regulation (FR) -Number Title 12 -Section 563c.102 -Paragraph 8 -Subparagraph j(ii) -Chapter V -Subsection I -LegacyDoc This is a non-GAAP reference that was included in the 2009 taxonomy. It will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 15 -Paragraph 40 -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. false2Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans3false 4novb_FinancingReceivableTroubledDebtRestructuringAccruingStatusnovb_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse24850002485000falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse24140002414000falsefalsefalsexbrli:monetaryItemTypemonetaryRepresents Troubled Debt Restructuring (TDRs) in financing receivables that are accruing in status as of the balance sheet date.No definition available.false2Accruing TDRs4false 4novb_FinancingReceivableTroubledDebtRestructuringNonaccrualStatusnovb_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse11700001170000USD$falsetruefalse2falsefalsefalse00falsefalsefalse3truefalsefalse10720001072000USD$falsetruefalsexbrli:monetaryItemTypemonetaryRepresents Troubled Debt Restructuring (TDRs) in financing receivables that are on nonaccrual status as of the balance sheet date.No definition available.false2Non-accrual TDRsfalseNOTE 3 - LOANS (Detail) (USD $)NoRoundingUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.novb.com/role/Note3LoansDetail34