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4us-gaap_BusinessAcquisitionPurchasePriceAllocationCurrentAssetsCashAndCashEquivalentsus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7truefalsefalse4607900046079USD$falsetruefalse8truefalsefalse00USD$falsetruefalse9truefalsefalse4607900046079USD$falsetruefalse10falsefalsefalse00falsefalsefalse11truefalsefalse4607900046079USD$falsetruefalse12truefalsefalse1984700019847USD$falsetruefalse13truefalsefalse00USD$falsetruefalse14truefalsefalse1984700019847USD$falsetruefalsexbrli:monetaryItemTypemonetaryThe amount of cash and cash equivalents acquired in a business combination.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph e -LegacyDoc This reference 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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 FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 37 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. 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This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. false2Premises and Equipment7false 4bncn_BusinessAcquisitionPurchasePriceAllocationInterestReceivablebncn_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7truefalsefalse15650001565falsefalsefalse8truefalsefalse00falsefalsefalse9truefalsefalse15650001565falsefalsefalse10falsefalsefalse00falsefalsefalse11truefalsefalse15650001565falsefalsefalse12truefalsefalse547000547falsefalsefalse13truefalsefalse00falsefalsefalse14truefalsefalse547000547falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Accrued Interest Receivable8false 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4us-gaap_BusinessAcquisitionPurchasePriceAllocationAssetsAcquiredus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalsetotalLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7truefalsefalse380676000380676falsefalsefalse8truefalsefalse-4368000-4368falsefalsefalse9truefalsefalse376308000376308falsefalsefalse10falsefalsefalse00falsefalsefalse11truefalsefalse376308000376308falsefalsefalse12truefalsefalse178948000178948falsefalsefalse13truefalsefalse-4703000-4703falsefalsefalse14truefalsefalse174245000174245falsefalsefalsexbrli:monetaryItemTypemonetaryThe amount of acquisition cost of a business combination allocated to assets acquired.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 37 -LegacyDoc This reference is SUPERSEDED by 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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 FASB -Name Emerging Issues Task Force (EITF) -Number 98-1 -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 FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 37 -Subparagraph g -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. false2Long-Term Debt16false 4us-gaap_BusinessAcquisitionPurchasePriceAllocationOtherLiabilitiesus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsetruenegatedLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7truefalsefalse-2849000-2849falsefalsefalse8truefalsefalse00falsefalsefalse9truefalsefalse-2849000-2849falsefalsefalse10truefalsefalse719000719falsefalsefalse11truefalsefalse-2130000-2130falsefalsefalse12truefalsefalse-1754000-1754falsefalsefalse13truefalsefalse102000102falsefalsefalse14truefalsefalse-1652000-1652falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of acquisition cost of a business combination allocated to other liabilities not separately disclosed in the balance sheet.No definition available.false2Other Liabilities17false 4us-gaap_BusinessAcquisitionPurchasePriceAllocationLiabilitiesAssumedus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsetruenegatedTotalLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7truefalsefalse-333887000-333887falsefalsefalse8truefalsefalse-884000-884falsefalsefalse9truefalsefalse-334771000-334771falsefalsefalse10truefalsefalse719000719falsefalsefalse11truefalsefalse-334052000-334052falsefalsefalse12truefalsefalse-160086000-160086falsefalsefalse13truefalsefalse-800000-800falsefalsefalse14truefalsefalse-160886000-160886falsefalsefalsexbrli:monetaryItemTypemonetaryThe amount of acquisition cost of a business combination allocated to liabilities assumed.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 98-1 -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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