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Fair Value Unobservable Inputs (Details) (Fair Value, Measurements, Nonrecurring [Member], Carrying (Reported) Amount, Fair Value Disclosure [Member], USD $) In Thousands, unless otherwise specified | Mar. 31, 2015
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Impaired Loans [Member] |
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items] |
Assets, Fair Value Disclosure | $ 3,083us-gaap_AssetsFairValueDisclosure / us-gaap_FairValueByMeasurementBasisAxis = us-gaap_CarryingReportedAmountFairValueDisclosureMember / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsNonrecurringMember / aubn_FairValueByMeasurementTypeAxis = aubn_ImpairedLoansMember
Impaired Loans [Member] | Appraisal, Appraisal Discount [Member] |
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items] |
Unobservable Input, Weighted Average of Input Percent | 0.169aubn_UnobservableInputWeightedAverageOfInputPercent / aubn_FairValueAssetsMeasuredOnNonrecurringBasisValuationTechniquesAxis = aubn_AppraisalAppraisalDiscountMember / us-gaap_FairValueByMeasurementBasisAxis = us-gaap_CarryingReportedAmountFairValueDisclosureMember / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsNonrecurringMember / aubn_FairValueByMeasurementTypeAxis = aubn_ImpairedLoansMember
Other Real Estate Owned [Member] |
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items] |
Assets, Fair Value Disclosure | 499us-gaap_AssetsFairValueDisclosure / us-gaap_FairValueByMeasurementBasisAxis = us-gaap_CarryingReportedAmountFairValueDisclosureMember / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsNonrecurringMember / aubn_FairValueByMeasurementTypeAxis = aubn_OtherRealEstateOwnedMember
Other Real Estate Owned [Member] | Appraisal, Appraisal Discount [Member] |
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items] |
Unobservable Input, Weighted Average of Input Percent | 0.267aubn_UnobservableInputWeightedAverageOfInputPercent / aubn_FairValueAssetsMeasuredOnNonrecurringBasisValuationTechniquesAxis = aubn_AppraisalAppraisalDiscountMember / us-gaap_FairValueByMeasurementBasisAxis = us-gaap_CarryingReportedAmountFairValueDisclosureMember / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsNonrecurringMember / aubn_FairValueByMeasurementTypeAxis = aubn_OtherRealEstateOwnedMember
Mortgage Servicing Rights [Member] |
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items] |
Assets, Fair Value Disclosure | $ 2,355us-gaap_AssetsFairValueDisclosure / us-gaap_FairValueByMeasurementBasisAxis = us-gaap_CarryingReportedAmountFairValueDisclosureMember / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsNonrecurringMember / aubn_FairValueByMeasurementTypeAxis = aubn_MortgageServicingRightsMember
Mortgage Servicing Rights [Member] | Discounted Cash Flow, Prepayment Speed [Member] |
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items] |
Unobservable Input, Weighted Average of Input Percent | 0.105aubn_UnobservableInputWeightedAverageOfInputPercent / aubn_FairValueAssetsMeasuredOnNonrecurringBasisValuationTechniquesAxis = aubn_DiscountedCashFlowPrepaymentSpeedMember / us-gaap_FairValueByMeasurementBasisAxis = us-gaap_CarryingReportedAmountFairValueDisclosureMember / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsNonrecurringMember / aubn_FairValueByMeasurementTypeAxis = aubn_MortgageServicingRightsMember
Mortgage Servicing Rights [Member] | Discounted Cash Flow, Discount Rate [Member] |
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items] |
Unobservable Input, Weighted Average of Input Percent | 0.1aubn_UnobservableInputWeightedAverageOfInputPercent / aubn_FairValueAssetsMeasuredOnNonrecurringBasisValuationTechniquesAxis = aubn_DiscountedCashFlowDiscountRateMember / us-gaap_FairValueByMeasurementBasisAxis = us-gaap_CarryingReportedAmountFairValueDisclosureMember / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsNonrecurringMember / aubn_FairValueByMeasurementTypeAxis = aubn_MortgageServicingRightsMember

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
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