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Loan Credit Quality Analysis (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Financing Receivable, Recorded Investment [Line Items]    
Financing Receivable, Recorded Investment, Pass $ 383,356aubn_FinancingReceivableRecordedInvestmentPass $ 361,218aubn_FinancingReceivableRecordedInvestmentPass
Financing Receivable, Recorded Investment, Special Mention 11,289aubn_FinancingReceivableRecordedInvestmentSpecialMention 7,705aubn_FinancingReceivableRecordedInvestmentSpecialMention
Financing Receivable Recorded Investment, Substandard Accruing 7,847aubn_FinancingReceivableRecordedInvestmentSubstandardAccruing 10,594aubn_FinancingReceivableRecordedInvestmentSubstandardAccruing
Financing Receivable, Recorded Investment, Nonaccrual Status 1,117us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus 4,261us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
Loans and Leases Receivable, Gross, Carrying Amount 403,609us-gaap_LoansAndLeasesReceivableGrossCarryingAmount 383,778us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
Commercial and Industrial Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing Receivable, Recorded Investment, Pass 49,550aubn_FinancingReceivableRecordedInvestmentPass
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialAndIndustrialLoansMember		 53,060aubn_FinancingReceivableRecordedInvestmentPass
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialAndIndustrialLoansMember
Financing Receivable, Recorded Investment, Special Mention 4,348aubn_FinancingReceivableRecordedInvestmentSpecialMention
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialAndIndustrialLoansMember		 4,183aubn_FinancingReceivableRecordedInvestmentSpecialMention
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialAndIndustrialLoansMember
Financing Receivable Recorded Investment, Substandard Accruing 376aubn_FinancingReceivableRecordedInvestmentSubstandardAccruing
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialAndIndustrialLoansMember		 482aubn_FinancingReceivableRecordedInvestmentSubstandardAccruing
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialAndIndustrialLoansMember
Financing Receivable, Recorded Investment, Nonaccrual Status 55us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialAndIndustrialLoansMember		 55us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialAndIndustrialLoansMember
Loans and Leases Receivable, Gross, Carrying Amount 54,329us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialAndIndustrialLoansMember		 57,780us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialAndIndustrialLoansMember
Construction And Land Development Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing Receivable, Recorded Investment, Pass 35,911aubn_FinancingReceivableRecordedInvestmentPass
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ConstructionAndLandDevelopmentLoansMember		 33,616aubn_FinancingReceivableRecordedInvestmentPass
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ConstructionAndLandDevelopmentLoansMember
Financing Receivable, Recorded Investment, Special Mention 226aubn_FinancingReceivableRecordedInvestmentSpecialMention
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ConstructionAndLandDevelopmentLoansMember		 180aubn_FinancingReceivableRecordedInvestmentSpecialMention
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ConstructionAndLandDevelopmentLoansMember
Financing Receivable Recorded Investment, Substandard Accruing 556aubn_FinancingReceivableRecordedInvestmentSubstandardAccruing
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ConstructionAndLandDevelopmentLoansMember		 1,101aubn_FinancingReceivableRecordedInvestmentSubstandardAccruing
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ConstructionAndLandDevelopmentLoansMember
Financing Receivable, Recorded Investment, Nonaccrual Status 605us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ConstructionAndLandDevelopmentLoansMember		 1,582us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ConstructionAndLandDevelopmentLoansMember
Loans and Leases Receivable, Gross, Carrying Amount 37,298us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ConstructionAndLandDevelopmentLoansMember		 36,479us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ConstructionAndLandDevelopmentLoansMember
Commercial Real Estate Owner Occupied Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing Receivable, Recorded Investment, Pass 49,900aubn_FinancingReceivableRecordedInvestmentPass
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialRealEstateOwnerOccupiedLoansMember		 53,430aubn_FinancingReceivableRecordedInvestmentPass
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialRealEstateOwnerOccupiedLoansMember
Financing Receivable, Recorded Investment, Special Mention 1,905aubn_FinancingReceivableRecordedInvestmentSpecialMention
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialRealEstateOwnerOccupiedLoansMember		 770aubn_FinancingReceivableRecordedInvestmentSpecialMention
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialRealEstateOwnerOccupiedLoansMember
Financing Receivable Recorded Investment, Substandard Accruing 228aubn_FinancingReceivableRecordedInvestmentSubstandardAccruing
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialRealEstateOwnerOccupiedLoansMember		 875aubn_FinancingReceivableRecordedInvestmentSubstandardAccruing
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialRealEstateOwnerOccupiedLoansMember
Financing Receivable, Recorded Investment, Nonaccrual Status 263us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialRealEstateOwnerOccupiedLoansMember		 1,027us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialRealEstateOwnerOccupiedLoansMember
Loans and Leases Receivable, Gross, Carrying Amount 52,296us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialRealEstateOwnerOccupiedLoansMember		 56,102us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialRealEstateOwnerOccupiedLoansMember
Commercial Real Estate Other Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing Receivable, Recorded Investment, Pass 136,801aubn_FinancingReceivableRecordedInvestmentPass
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialRealEstateOtherLoansMember		 117,490aubn_FinancingReceivableRecordedInvestmentPass
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialRealEstateOtherLoansMember
Financing Receivable, Recorded Investment, Special Mention 2,253aubn_FinancingReceivableRecordedInvestmentSpecialMention
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialRealEstateOtherLoansMember		 91aubn_FinancingReceivableRecordedInvestmentSpecialMention
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialRealEstateOtherLoansMember
Financing Receivable Recorded Investment, Substandard Accruing 656aubn_FinancingReceivableRecordedInvestmentSubstandardAccruing
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialRealEstateOtherLoansMember		 808aubn_FinancingReceivableRecordedInvestmentSubstandardAccruing
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialRealEstateOtherLoansMember
Financing Receivable, Recorded Investment, Nonaccrual Status 0us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialRealEstateOtherLoansMember		 429us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialRealEstateOtherLoansMember
Loans and Leases Receivable, Gross, Carrying Amount 139,710us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialRealEstateOtherLoansMember		 118,818us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialRealEstateOtherLoansMember
Commercial Real Estate Loans, Total [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing Receivable, Recorded Investment, Pass 186,701aubn_FinancingReceivableRecordedInvestmentPass
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialRealEstateLoansTotalMember		 170,920aubn_FinancingReceivableRecordedInvestmentPass
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialRealEstateLoansTotalMember
Financing Receivable, Recorded Investment, Special Mention 4,158aubn_FinancingReceivableRecordedInvestmentSpecialMention
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialRealEstateLoansTotalMember		 861aubn_FinancingReceivableRecordedInvestmentSpecialMention
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialRealEstateLoansTotalMember
Financing Receivable Recorded Investment, Substandard Accruing 884aubn_FinancingReceivableRecordedInvestmentSubstandardAccruing
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialRealEstateLoansTotalMember		 1,683aubn_FinancingReceivableRecordedInvestmentSubstandardAccruing
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialRealEstateLoansTotalMember
Financing Receivable, Recorded Investment, Nonaccrual Status 263us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialRealEstateLoansTotalMember		 1,456us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialRealEstateLoansTotalMember
Loans and Leases Receivable, Gross, Carrying Amount 192,006us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialRealEstateLoansTotalMember		 174,920us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_CommercialRealEstateLoansTotalMember
Residential Real Estate Consumer Mortgage Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing Receivable, Recorded Investment, Pass 59,646aubn_FinancingReceivableRecordedInvestmentPass
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ResidentialRealEstateConsumerMortgageLoansMember		 50,392aubn_FinancingReceivableRecordedInvestmentPass
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ResidentialRealEstateConsumerMortgageLoansMember
Financing Receivable, Recorded Investment, Special Mention 1,912aubn_FinancingReceivableRecordedInvestmentSpecialMention
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ResidentialRealEstateConsumerMortgageLoansMember		 1,137aubn_FinancingReceivableRecordedInvestmentSpecialMention
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ResidentialRealEstateConsumerMortgageLoansMember
Financing Receivable Recorded Investment, Substandard Accruing 4,891aubn_FinancingReceivableRecordedInvestmentSubstandardAccruing
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ResidentialRealEstateConsumerMortgageLoansMember		 5,476aubn_FinancingReceivableRecordedInvestmentSubstandardAccruing
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ResidentialRealEstateConsumerMortgageLoansMember
Financing Receivable, Recorded Investment, Nonaccrual Status 40us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ResidentialRealEstateConsumerMortgageLoansMember		 866us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ResidentialRealEstateConsumerMortgageLoansMember
Loans and Leases Receivable, Gross, Carrying Amount 66,489us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ResidentialRealEstateConsumerMortgageLoansMember		 57,871us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ResidentialRealEstateConsumerMortgageLoansMember
Residential Real Estate Investment Property Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing Receivable, Recorded Investment, Pass 39,348aubn_FinancingReceivableRecordedInvestmentPass
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ResidentialRealEstateInvestmentPropertyLoansMember		 40,517aubn_FinancingReceivableRecordedInvestmentPass
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ResidentialRealEstateInvestmentPropertyLoansMember
Financing Receivable, Recorded Investment, Special Mention 624aubn_FinancingReceivableRecordedInvestmentSpecialMention
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ResidentialRealEstateInvestmentPropertyLoansMember		 1,310aubn_FinancingReceivableRecordedInvestmentSpecialMention
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ResidentialRealEstateInvestmentPropertyLoansMember
Financing Receivable Recorded Investment, Substandard Accruing 1,026aubn_FinancingReceivableRecordedInvestmentSubstandardAccruing
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ResidentialRealEstateInvestmentPropertyLoansMember		 1,706aubn_FinancingReceivableRecordedInvestmentSubstandardAccruing
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ResidentialRealEstateInvestmentPropertyLoansMember
Financing Receivable, Recorded Investment, Nonaccrual Status 154us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ResidentialRealEstateInvestmentPropertyLoansMember		 302us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ResidentialRealEstateInvestmentPropertyLoansMember
Loans and Leases Receivable, Gross, Carrying Amount 41,152us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ResidentialRealEstateInvestmentPropertyLoansMember		 43,835us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ResidentialRealEstateInvestmentPropertyLoansMember
Residential Real Estate Loans, Total [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing Receivable, Recorded Investment, Pass 98,994aubn_FinancingReceivableRecordedInvestmentPass
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ResidentialRealEstateLoansTotalMember		 90,909aubn_FinancingReceivableRecordedInvestmentPass
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ResidentialRealEstateLoansTotalMember
Financing Receivable, Recorded Investment, Special Mention 2,536aubn_FinancingReceivableRecordedInvestmentSpecialMention
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ResidentialRealEstateLoansTotalMember		 2,447aubn_FinancingReceivableRecordedInvestmentSpecialMention
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ResidentialRealEstateLoansTotalMember
Financing Receivable Recorded Investment, Substandard Accruing 5,917aubn_FinancingReceivableRecordedInvestmentSubstandardAccruing
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ResidentialRealEstateLoansTotalMember		 7,182aubn_FinancingReceivableRecordedInvestmentSubstandardAccruing
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ResidentialRealEstateLoansTotalMember
Financing Receivable, Recorded Investment, Nonaccrual Status 194us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ResidentialRealEstateLoansTotalMember		 1,168us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ResidentialRealEstateLoansTotalMember
Loans and Leases Receivable, Gross, Carrying Amount 107,641us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ResidentialRealEstateLoansTotalMember		 101,706us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ResidentialRealEstateLoansTotalMember
Consumer Installment and Revolving Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing Receivable, Recorded Investment, Pass 12,200aubn_FinancingReceivableRecordedInvestmentPass
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ConsumerInstallmentAndRevolvingLoansMember		 12,713aubn_FinancingReceivableRecordedInvestmentPass
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ConsumerInstallmentAndRevolvingLoansMember
Financing Receivable, Recorded Investment, Special Mention 21aubn_FinancingReceivableRecordedInvestmentSpecialMention
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ConsumerInstallmentAndRevolvingLoansMember		 34aubn_FinancingReceivableRecordedInvestmentSpecialMention
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ConsumerInstallmentAndRevolvingLoansMember
Financing Receivable Recorded Investment, Substandard Accruing 114aubn_FinancingReceivableRecordedInvestmentSubstandardAccruing
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ConsumerInstallmentAndRevolvingLoansMember		 146aubn_FinancingReceivableRecordedInvestmentSubstandardAccruing
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ConsumerInstallmentAndRevolvingLoansMember
Financing Receivable, Recorded Investment, Nonaccrual Status 0us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ConsumerInstallmentAndRevolvingLoansMember		 0us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ConsumerInstallmentAndRevolvingLoansMember
Loans and Leases Receivable, Gross, Carrying Amount $ 12,335us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ConsumerInstallmentAndRevolvingLoansMember		 $ 12,893us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= aubn_ConsumerInstallmentAndRevolvingLoansMember