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

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