i 86 i 0000750574 i --12-31
i 2023 i Q3 i False i 0.01
i 200000 i - i -
i 0.01 i 8500000 i 3957135
i - i - i -
i - i - i ☒
i ☐ i Yes i Yes i ☒
i ☐ i ☒ 0000750574 2023-01-01 2023-09-30
0000750574 2023-09-30
0000750574 2022-12-31
0000750574 aubn:CommercialAndIndustrialLoansMember 2022-07-01 2022-09-30
0000750574 aubn:ConstructionAndLandDevelopmentLoansMember 2022-07-01 2022-09-30
0000750574 aubn:CommercialRealEstateLoansTotalMember 2022-07-01 2022-09-30
0000750574 aubn:ResidentialRealEstateLoansTotalMember 2022-07-01 2022-09-30
0000750574
aubn:ConsumerInstallmentAndRevolvingLoansMember 2022-07-01 2022-09-30
0000750574 2022-07-01 2022-09-30
0000750574 2023-07-01 2023-09-30
0000750574 aubn:CommercialAndIndustrialLoansMember 2023-01-01 2023-09-30
0000750574 aubn:CommercialRealEstateLoansTotalMember 2023-01-01 2023-09-30
0000750574 aubn:ResidentialRealEstateLoansTotalMember 2023-01-01 2023-09-30
0000750574
aubn:ConsumerInstallmentAndRevolvingLoansMember 2023-07-01 2023-09-30
0000750574 aubn:CommercialAndIndustrialLoansMember 2023-07-01 2023-09-30
0000750574 aubn:ConstructionAndLandDevelopmentLoansMember 2023-07-01 2023-09-30
0000750574 aubn:CommercialRealEstateLoansTotalMember 2023-07-01 2023-09-30
0000750574 aubn:ResidentialRealEstateLoansTotalMember 2023-07-01 2023-09-30
0000750574
us-gaap:FairValueMeasurementsRecurringMember 2023-09-30
0000750574 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel1Member 2023-09-30
0000750574 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel2Member 2023-09-30
0000750574 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member 2023-09-30
0000750574 us-gaap:FairValueMeasurementsRecurringMember 2022-12-31
0000750574
us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel1Member 2022-12-31
0000750574 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel2Member 2022-12-31
0000750574 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member 2022-12-31
0000750574 aubn:CommercialAndIndustrialLoansMember 2022-12-31
0000750574 aubn:ConstructionAndLandDevelopmentLoansMember 2022-12-31
0000750574
aubn:CommercialRealEstateOwnerOccupiedLoansMember 2022-12-31
0000750574 aubn:CommercialRealEstateMultifamilyMember 2022-12-31
0000750574 aubn:CommercialRealEstateOtherLoansMember 2022-12-31
0000750574 aubn:CommercialRealEstateLoansTotalMember 2022-12-31
0000750574 aubn:ResidentialRealEstateConsumerMortgageLoansMember 2022-12-31
0000750574 aubn:ResidentialRealEstateInvestmentPropertyLoansMember
2022-12-31
0000750574 aubn:ResidentialRealEstateLoansTotalMember 2022-12-31
0000750574 aubn:ConsumerInstallmentAndRevolvingLoansMember 2022-12-31
0000750574 aubn:CommercialRealEstateMultifamilyMember 2023-09-30
0000750574 us-gaap:FairValueMeasurementsNonrecurringMember 2022-12-31
0000750574 us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsNonrecurringMember
2022-12-31
0000750574 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsNonrecurringMember 2022-12-31
0000750574 us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsNonrecurringMember 2022-12-31
0000750574 us-gaap:CarryingReportedAmountFairValueDisclosureMember 2023-09-30
0000750574 us-gaap:CarryingReportedAmountFairValueDisclosureMember 2022-12-31
0000750574
us-gaap:FairValueMeasurementsNonrecurringMember aubn:MortgageServicingRightsMember 2023-09-30
0000750574 us-gaap:FairValueMeasurementsNonrecurringMember 2023-09-30
0000750574 us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsNonrecurringMember 2023-09-30
0000750574 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsNonrecurringMember 2023-09-30
0000750574 us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsNonrecurringMember 2023-09-30
0000750574 us-gaap:EstimateOfFairValueFairValueDisclosureMember 2023-09-30
0000750574 us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2023-09-30
0000750574 us-gaap:FairValueInputsLevel2Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2023-09-30
0000750574 us-gaap:FairValueInputsLevel3Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2023-09-30
0000750574
us-gaap:EstimateOfFairValueFairValueDisclosureMember 2022-12-31
0000750574 us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2022-12-31
0000750574 us-gaap:FairValueInputsLevel2Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2022-12-31
0000750574 us-gaap:FairValueInputsLevel3Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2022-12-31
0000750574 2022-09-30
0000750574
us-gaap:CommonStockMember 2022-12-31
0000750574 us-gaap:AdditionalPaidInCapitalMember 2022-12-31
0000750574 us-gaap:RetainedEarningsMember 2022-12-31
0000750574 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2022-12-31
0000750574 us-gaap:TreasuryStockCommonMember 2022-12-31
0000750574 us-gaap:CommonStockMember 2021-12-31
0000750574
us-gaap:AdditionalPaidInCapitalMember 2021-12-31
0000750574 us-gaap:RetainedEarningsMember 2021-12-31
0000750574 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2021-12-31
0000750574 us-gaap:TreasuryStockCommonMember 2021-12-31
0000750574 aubn:CommercialRealEstateHotelMotelMember 2022-12-31
0000750574 us-gaap:FairValueMeasurementsNonrecurringMember aubn:ImpairedLoansMember
2022-12-31
0000750574 aubn:MortgageServicingRightsMember us-gaap:FairValueMeasurementsNonrecurringMember 2022-12-31
0000750574 aubn:MortgageServicingRightsMember us-gaap:FairValueMeasurementsNonrecurringMember aubn:DiscountedCashFlowDiscountRateMember srt:WeightedAverageMember 2022-12-31
0000750574 aubn:MortgageServicingRightsMember us-gaap:FairValueMeasurementsNonrecurringMember srt:WeightedAverageMember aubn:DiscountedCashFlowPrepaymentSpeedMember 2022-12-31
0000750574 us-gaap:FairValueMeasurementsNonrecurringMember
aubn:ImpairedLoansMember srt:WeightedAverageMember aubn:AppraisalAppraisalDiscountMember 2022-12-31
0000750574 aubn:MortgageServicingRightsMember us-gaap:FairValueMeasurementsNonrecurringMember aubn:DiscountedCashFlowDiscountRateMember srt:MinimumMember 2023-09-30
0000750574 aubn:MortgageServicingRightsMember us-gaap:FairValueMeasurementsNonrecurringMember aubn:DiscountedCashFlowDiscountRateMember srt:MaximumMember 2023-09-30
0000750574 aubn:MortgageServicingRightsMember us-gaap:FairValueMeasurementsNonrecurringMember aubn:DiscountedCashFlowDiscountRateMember srt:WeightedAverageMember 2023-09-30
0000750574
aubn:MortgageServicingRightsMember us-gaap:FairValueMeasurementsNonrecurringMember aubn:DiscountedCashFlowPrepaymentSpeedMember srt:MinimumMember 2023-09-30
0000750574 aubn:MortgageServicingRightsMember us-gaap:FairValueMeasurementsNonrecurringMember aubn:DiscountedCashFlowPrepaymentSpeedMember srt:MaximumMember 2023-09-30
0000750574 aubn:MortgageServicingRightsMember us-gaap:FairValueMeasurementsNonrecurringMember srt:WeightedAverageMember aubn:DiscountedCashFlowPrepaymentSpeedMember 2023-09-30
0000750574 2021-12-31
0000750574
us-gaap:USTreasuryAndGovernmentMember 2023-09-30
0000750574 us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember 2023-09-30
0000750574 us-gaap:USStatesAndPoliticalSubdivisionsMember 2023-09-30
0000750574 us-gaap:USTreasuryAndGovernmentMember 2022-12-31
0000750574 us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember 2022-12-31
0000750574
us-gaap:USStatesAndPoliticalSubdivisionsMember 2022-12-31
0000750574 us-gaap:CommonStockMember 2022-09-30
0000750574 us-gaap:RetainedEarningsMember 2023-07-01 2023-09-30
0000750574 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2023-07-01 2023-09-30
0000750574 us-gaap:AdditionalPaidInCapitalMember 2023-07-01 2023-09-30
0000750574 us-gaap:TreasuryStockCommonMember
2023-07-01 2023-09-30
0000750574 us-gaap:CommonStockMember 2023-07-01 2023-09-30
0000750574 us-gaap:CommonStockMember 2022-07-01 2022-09-30
0000750574 us-gaap:RetainedEarningsMember 2022-07-01 2022-09-30
0000750574 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2022-07-01 2022-09-30
0000750574 us-gaap:AdditionalPaidInCapitalMember 2022-07-01 2022-09-30
0000750574
aubn:CommercialAndIndustrialLoansMember 2022-09-30
0000750574 aubn:ConstructionAndLandDevelopmentLoansMember 2022-09-30
0000750574 aubn:CommercialRealEstateLoansTotalMember 2022-09-30
0000750574 aubn:ResidentialRealEstateLoansTotalMember 2022-09-30
0000750574 aubn:ConsumerInstallmentAndRevolvingLoansMember 2022-09-30
0000750574 aubn:ImpairedLoansMember us-gaap:FairValueMeasurementsNonrecurringMember
2023-09-30
0000750574 2023-11-06
0000750574 us-gaap:AdditionalPaidInCapitalMember 2022-09-30
0000750574 us-gaap:RetainedEarningsMember 2022-09-30
0000750574 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2022-09-30
0000750574 us-gaap:TreasuryStockCommonMember 2022-09-30
0000750574
2022-01-01 2022-09-30
0000750574 aubn:ImpairedLoansMember aubn:AppraisalAppraisalDiscountMember srt:MinimumMember us-gaap:FairValueMeasurementsNonrecurringMember 2022-12-31
0000750574 aubn:ImpairedLoansMember aubn:AppraisalAppraisalDiscountMember srt:MaximumMember us-gaap:FairValueMeasurementsNonrecurringMember 2022-12-31
0000750574 aubn:MortgageServicingRightsMember aubn:DiscountedCashFlowPrepaymentSpeedMember srt:MinimumMember us-gaap:FairValueMeasurementsNonrecurringMember 2022-12-31
0000750574
aubn:MortgageServicingRightsMember aubn:DiscountedCashFlowPrepaymentSpeedMember srt:MaximumMember us-gaap:FairValueMeasurementsNonrecurringMember 2022-12-31
0000750574 aubn:MortgageServicingRightsMember aubn:DiscountedCashFlowDiscountRateMember srt:MinimumMember us-gaap:FairValueMeasurementsNonrecurringMember 2022-12-31
0000750574 aubn:MortgageServicingRightsMember aubn:DiscountedCashFlowDiscountRateMember srt:MaximumMember us-gaap:FairValueMeasurementsNonrecurringMember 2022-12-31
0000750574 us-gaap:CommonStockMember 2023-09-30
0000750574
us-gaap:AdditionalPaidInCapitalMember 2023-09-30
0000750574 us-gaap:RetainedEarningsMember 2023-09-30
0000750574 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2023-09-30
0000750574 us-gaap:TreasuryStockCommonMember 2023-09-30
0000750574 aubn:CommercialAndIndustrialLoansMember 2023-09-30
0000750574 aubn:ConstructionAndLandDevelopmentLoansMember 2023-09-30
0000750574 aubn:CommercialRealEstateLoansTotalMember 2023-09-30
0000750574 aubn:ResidentialRealEstateLoansTotalMember 2023-09-30
0000750574 aubn:ConsumerInstallmentAndRevolvingLoansMember 2023-09-30
0000750574 aubn:CommercialAndIndustrialLoansMember 2021-12-31
0000750574 aubn:ConstructionAndLandDevelopmentLoansMember 2021-12-31
0000750574
aubn:CommercialRealEstateLoansTotalMember 2021-12-31
0000750574 aubn:ResidentialRealEstateLoansTotalMember 2021-12-31
0000750574 aubn:ConsumerInstallmentAndRevolvingLoansMember 2021-12-31
0000750574 aubn:CommercialRealEstateOwnerOccupiedLoansMember 2023-09-30
0000750574 aubn:CommercialRealEstateOtherLoansMember 2023-09-30
0000750574 aubn:ResidentialRealEstateConsumerMortgageLoansMember
2023-09-30
0000750574 aubn:ResidentialRealEstateInvestmentPropertyLoansMember 2023-09-30
0000750574 aubn:CommercialAndIndustrialLoansMember us-gaap:PassMember 2022-12-31
0000750574 aubn:ConstructionAndLandDevelopmentLoansMember us-gaap:PassMember 2022-12-31
0000750574 aubn:CommercialRealEstateOwnerOccupiedLoansMember us-gaap:PassMember 2022-12-31
0000750574 aubn:CommercialRealEstateHotelMotelMember
us-gaap:PassMember 2022-12-31
0000750574 aubn:CommercialRealEstateMultifamilyMember us-gaap:PassMember 2022-12-31
0000750574 aubn:CommercialRealEstateOtherLoansMember us-gaap:PassMember 2022-12-31
0000750574 aubn:CommercialRealEstateLoansTotalMember us-gaap:PassMember 2022-12-31
0000750574 aubn:ResidentialRealEstateConsumerMortgageLoansMember us-gaap:PassMember 2022-12-31
0000750574
aubn:ResidentialRealEstateInvestmentPropertyLoansMember us-gaap:PassMember 2022-12-31
0000750574 aubn:ResidentialRealEstateLoansTotalMember us-gaap:PassMember 2022-12-31
0000750574 aubn:ConsumerInstallmentAndRevolvingLoansMember us-gaap:PassMember 2022-12-31
0000750574 us-gaap:PassMember 2022-12-31
0000750574 us-gaap:SpecialMentionMember 2022-12-31
0000750574 us-gaap:SubstandardMember
2022-12-31
0000750574 aubn:CommercialAndIndustrialLoansMember us-gaap:SpecialMentionMember 2022-12-31
0000750574 aubn:CommercialAndIndustrialLoansMember us-gaap:SubstandardMember 2022-12-31
0000750574 aubn:ConstructionAndLandDevelopmentLoansMember us-gaap:SpecialMentionMember 2022-12-31
0000750574 aubn:ConstructionAndLandDevelopmentLoansMember us-gaap:SubstandardMember 2022-12-31
0000750574
aubn:CommercialRealEstateOwnerOccupiedLoansMember us-gaap:SpecialMentionMember 2022-12-31
0000750574 aubn:CommercialRealEstateOwnerOccupiedLoansMember us-gaap:SubstandardMember 2022-12-31
0000750574 aubn:CommercialRealEstateHotelMotelMember us-gaap:SpecialMentionMember 2022-12-31
0000750574 aubn:CommercialRealEstateHotelMotelMember us-gaap:SubstandardMember 2022-12-31
0000750574 aubn:CommercialRealEstateMultifamilyMember us-gaap:SpecialMentionMember 2022-12-31
0000750574
aubn:CommercialRealEstateMultifamilyMember us-gaap:SubstandardMember 2022-12-31
0000750574 aubn:CommercialRealEstateOtherLoansMember us-gaap:SpecialMentionMember 2022-12-31
0000750574 aubn:CommercialRealEstateOtherLoansMember us-gaap:SubstandardMember 2022-12-31
0000750574 aubn:CommercialRealEstateLoansTotalMember us-gaap:SpecialMentionMember 2022-12-31
0000750574 aubn:CommercialRealEstateLoansTotalMember us-gaap:SubstandardMember 2022-12-31
0000750574
aubn:ResidentialRealEstateConsumerMortgageLoansMember us-gaap:SpecialMentionMember 2022-12-31
0000750574 aubn:ResidentialRealEstateConsumerMortgageLoansMember us-gaap:SubstandardMember 2022-12-31
0000750574 aubn:ResidentialRealEstateInvestmentPropertyLoansMember us-gaap:SpecialMentionMember 2022-12-31
0000750574 aubn:ResidentialRealEstateInvestmentPropertyLoansMember us-gaap:SubstandardMember 2022-12-31
0000750574 aubn:ResidentialRealEstateLoansTotalMember us-gaap:SpecialMentionMember
2022-12-31
0000750574 aubn:ResidentialRealEstateLoansTotalMember us-gaap:SubstandardMember 2022-12-31
0000750574 aubn:ConsumerInstallmentAndRevolvingLoansMember us-gaap:SpecialMentionMember 2022-12-31
0000750574 aubn:ConsumerInstallmentAndRevolvingLoansMember us-gaap:SubstandardMember 2022-12-31
0000750574 aubn:CommercialAndIndustrialLoansMember us-gaap:PassMember 2023-09-30
0000750574
aubn:ConstructionAndLandDevelopmentLoansMember us-gaap:PassMember 2023-09-30
0000750574 aubn:CommercialRealEstateOwnerOccupiedLoansMember us-gaap:PassMember 2023-09-30
0000750574 aubn:CommercialRealEstateHotelMotelMember us-gaap:PassMember 2023-09-30
0000750574 aubn:CommercialAndIndustrialLoansMember us-gaap:SpecialMentionMember 2023-09-30
0000750574 aubn:CommercialAndIndustrialLoansMember us-gaap:SubstandardMember 2023-09-30
0000750574
aubn:ConstructionAndLandDevelopmentLoansMember us-gaap:SpecialMentionMember 2023-09-30
0000750574 aubn:ConstructionAndLandDevelopmentLoansMember us-gaap:SubstandardMember 2023-09-30
0000750574 aubn:CommercialRealEstateOwnerOccupiedLoansMember us-gaap:SpecialMentionMember 2023-09-30
0000750574 aubn:CommercialRealEstateOwnerOccupiedLoansMember us-gaap:SubstandardMember 2023-09-30
0000750574 aubn:CommercialRealEstateHotelMotelMember us-gaap:SpecialMentionMember 2023-09-30
0000750574
aubn:CommercialRealEstateHotelMotelMember us-gaap:SubstandardMember 2023-09-30
0000750574 aubn:CommercialAndIndustrialLoansMember us-gaap:FinancialAssetNotPastDueMember 2022-12-31
0000750574 aubn:CommercialAndIndustrialLoansMember us-gaap:FinancingReceivables1To29DaysPastDueMember 2022-12-31
0000750574 aubn:CommercialAndIndustrialLoansMember aubn:FinancialAssetMoreThan30DaysPastDueMember 2022-12-31
0000750574 aubn:ConstructionAndLandDevelopmentLoansMember us-gaap:FinancialAssetNotPastDueMember
2022-12-31
0000750574 aubn:ConstructionAndLandDevelopmentLoansMember us-gaap:FinancingReceivables1To29DaysPastDueMember 2022-12-31
0000750574 aubn:ConstructionAndLandDevelopmentLoansMember aubn:FinancialAssetMoreThan30DaysPastDueMember 2022-12-31
0000750574 aubn:CommercialRealEstateOwnerOccupiedLoansMember us-gaap:FinancialAssetNotPastDueMember 2022-12-31
0000750574 aubn:CommercialRealEstateOwnerOccupiedLoansMember us-gaap:FinancingReceivables1To29DaysPastDueMember 2022-12-31
0000750574
aubn:CommercialRealEstateOwnerOccupiedLoansMember aubn:FinancialAssetMoreThan30DaysPastDueMember 2022-12-31
0000750574 aubn:CommercialRealEstateHotelMotelMember us-gaap:FinancialAssetNotPastDueMember 2022-12-31
0000750574 aubn:CommercialRealEstateHotelMotelMember us-gaap:FinancingReceivables1To29DaysPastDueMember 2022-12-31
0000750574 aubn:CommercialRealEstateHotelMotelMember aubn:FinancialAssetMoreThan30DaysPastDueMember 2022-12-31
0000750574 aubn:CommercialRealEstateMultifamilyMember
us-gaap:FinancialAssetNotPastDueMember 2022-12-31
0000750574 aubn:CommercialRealEstateMultifamilyMember us-gaap:FinancingReceivables1To29DaysPastDueMember 2022-12-31
0000750574 aubn:CommercialRealEstateMultifamilyMember aubn:FinancialAssetMoreThan30DaysPastDueMember 2022-12-31
0000750574 aubn:CommercialRealEstateOtherLoansMember us-gaap:FinancialAssetNotPastDueMember 2022-12-31
0000750574 aubn:CommercialRealEstateOtherLoansMember us-gaap:FinancingReceivables1To29DaysPastDueMember 2022-12-31
0000750574 aubn:CommercialRealEstateOtherLoansMember aubn:FinancialAssetMoreThan30DaysPastDueMember 2022-12-31
0000750574 aubn:CommercialRealEstateLoansTotalMember us-gaap:FinancialAssetNotPastDueMember 2022-12-31
0000750574 aubn:CommercialRealEstateLoansTotalMember us-gaap:FinancingReceivables1To29DaysPastDueMember 2022-12-31
0000750574 aubn:CommercialRealEstateLoansTotalMember aubn:FinancialAssetMoreThan30DaysPastDueMember 2022-12-31
0000750574
aubn:ResidentialRealEstateConsumerMortgageLoansMember us-gaap:FinancialAssetNotPastDueMember 2022-12-31
0000750574 aubn:ResidentialRealEstateConsumerMortgageLoansMember us-gaap:FinancingReceivables1To29DaysPastDueMember 2022-12-31
0000750574 aubn:ResidentialRealEstateConsumerMortgageLoansMember aubn:FinancialAssetMoreThan30DaysPastDueMember 2022-12-31
0000750574 aubn:ResidentialRealEstateInvestmentPropertyLoansMember us-gaap:FinancialAssetNotPastDueMember 2022-12-31
0000750574 aubn:ResidentialRealEstateInvestmentPropertyLoansMember
us-gaap:FinancingReceivables1To29DaysPastDueMember 2022-12-31
0000750574 aubn:ResidentialRealEstateInvestmentPropertyLoansMember aubn:FinancialAssetMoreThan30DaysPastDueMember 2022-12-31
0000750574 aubn:ResidentialRealEstateLoansTotalMember us-gaap:FinancialAssetNotPastDueMember 2022-12-31
0000750574 aubn:ResidentialRealEstateLoansTotalMember us-gaap:FinancingReceivables1To29DaysPastDueMember 2022-12-31
0000750574 aubn:ResidentialRealEstateLoansTotalMember aubn:FinancialAssetMoreThan30DaysPastDueMember
2022-12-31
0000750574 aubn:ConsumerInstallmentAndRevolvingLoansMember us-gaap:FinancialAssetNotPastDueMember 2022-12-31
0000750574 aubn:ConsumerInstallmentAndRevolvingLoansMember us-gaap:FinancingReceivables1To29DaysPastDueMember 2022-12-31
0000750574 aubn:ConsumerInstallmentAndRevolvingLoansMember aubn:FinancialAssetMoreThan30DaysPastDueMember 2022-12-31
0000750574 us-gaap:FinancialAssetNotPastDueMember 2022-12-31
0000750574
us-gaap:FinancingReceivables1To29DaysPastDueMember 2022-12-31
0000750574 aubn:FinancialAssetMoreThan30DaysPastDueMember 2022-12-31
0000750574 aubn:CommercialAndIndustrialLoansMember us-gaap:FinancialAssetNotPastDueMember 2023-09-30
0000750574 aubn:CommercialAndIndustrialLoansMember us-gaap:FinancingReceivables1To29DaysPastDueMember 2023-09-30
0000750574 aubn:CommercialAndIndustrialLoansMember aubn:FinancialAssetMoreThan30DaysPastDueMember 2023-09-30
0000750574
aubn:ConstructionAndLandDevelopmentLoansMember us-gaap:FinancialAssetNotPastDueMember 2023-09-30
0000750574 aubn:ConstructionAndLandDevelopmentLoansMember us-gaap:FinancingReceivables1To29DaysPastDueMember 2023-09-30
0000750574 aubn:ConstructionAndLandDevelopmentLoansMember aubn:FinancialAssetMoreThan30DaysPastDueMember 2023-09-30
0000750574 aubn:CommercialRealEstateOwnerOccupiedLoansMember us-gaap:FinancialAssetNotPastDueMember 2023-09-30
0000750574 aubn:CommercialRealEstateOwnerOccupiedLoansMember
us-gaap:FinancingReceivables1To29DaysPastDueMember 2023-09-30
0000750574 aubn:CommercialRealEstateOwnerOccupiedLoansMember aubn:FinancialAssetMoreThan30DaysPastDueMember 2023-09-30
0000750574 aubn:CommercialRealEstateHotelMotelMember us-gaap:FinancialAssetNotPastDueMember 2023-09-30
0000750574 aubn:CommercialRealEstateHotelMotelMember us-gaap:FinancingReceivables1To29DaysPastDueMember 2023-09-30
0000750574 aubn:CommercialRealEstateHotelMotelMember aubn:FinancialAssetMoreThan30DaysPastDueMember
2023-09-30
0000750574 aubn:CommercialRealEstateMultifamilyMember us-gaap:FinancialAssetNotPastDueMember 2023-09-30
0000750574 aubn:CommercialRealEstateMultifamilyMember us-gaap:FinancingReceivables1To29DaysPastDueMember 2023-09-30
0000750574 aubn:CommercialRealEstateMultifamilyMember aubn:FinancialAssetMoreThan30DaysPastDueMember 2023-09-30
0000750574 aubn:CommercialRealEstateOtherLoansMember us-gaap:FinancialAssetNotPastDueMember 2023-09-30
0000750574
aubn:CommercialRealEstateOtherLoansMember us-gaap:FinancingReceivables1To29DaysPastDueMember 2023-09-30
0000750574 aubn:CommercialRealEstateOtherLoansMember aubn:FinancialAssetMoreThan30DaysPastDueMember 2023-09-30
0000750574 aubn:CommercialRealEstateLoansTotalMember us-gaap:FinancialAssetNotPastDueMember 2023-09-30
0000750574 aubn:CommercialRealEstateLoansTotalMember us-gaap:FinancingReceivables1To29DaysPastDueMember 2023-09-30
0000750574 aubn:CommercialRealEstateLoansTotalMember aubn:FinancialAssetMoreThan30DaysPastDueMember
2023-09-30
0000750574 aubn:ResidentialRealEstateConsumerMortgageLoansMember us-gaap:FinancialAssetNotPastDueMember 2023-09-30
0000750574 aubn:ResidentialRealEstateConsumerMortgageLoansMember us-gaap:FinancingReceivables1To29DaysPastDueMember 2023-09-30
0000750574 aubn:ResidentialRealEstateConsumerMortgageLoansMember aubn:FinancialAssetMoreThan30DaysPastDueMember 2023-09-30
0000750574 aubn:ResidentialRealEstateInvestmentPropertyLoansMember us-gaap:FinancialAssetNotPastDueMember 2023-09-30
0000750574 aubn:ResidentialRealEstateInvestmentPropertyLoansMember us-gaap:FinancingReceivables1To29DaysPastDueMember 2023-09-30
0000750574 aubn:ResidentialRealEstateInvestmentPropertyLoansMember aubn:FinancialAssetMoreThan30DaysPastDueMember 2023-09-30
0000750574 aubn:ResidentialRealEstateLoansTotalMember us-gaap:FinancialAssetNotPastDueMember 2023-09-30
0000750574 aubn:ResidentialRealEstateLoansTotalMember us-gaap:FinancingReceivables1To29DaysPastDueMember 2023-09-30
0000750574
aubn:ResidentialRealEstateLoansTotalMember aubn:FinancialAssetMoreThan30DaysPastDueMember 2023-09-30
0000750574 aubn:ConsumerInstallmentAndRevolvingLoansMember us-gaap:FinancialAssetNotPastDueMember 2023-09-30
0000750574 aubn:ConsumerInstallmentAndRevolvingLoansMember us-gaap:FinancingReceivables1To29DaysPastDueMember 2023-09-30
0000750574 aubn:ConsumerInstallmentAndRevolvingLoansMember aubn:FinancialAssetMoreThan30DaysPastDueMember 2023-09-30
0000750574 us-gaap:FinancialAssetNotPastDueMember
2023-09-30
0000750574 us-gaap:FinancingReceivables1To29DaysPastDueMember 2023-09-30
0000750574 aubn:FinancialAssetMoreThan30DaysPastDueMember 2023-09-30
0000750574 aubn:CommercialRealEstateHotelMotelMember 2023-09-30
0000750574 us-gaap:FairValueMeasurementsNonrecurringMember aubn:ImpairedLoansMember aubn:AppraisalAppraisalDiscountMember srt:MinimumMember 2023-09-30
0000750574
us-gaap:FairValueMeasurementsNonrecurringMember aubn:ImpairedLoansMember aubn:AppraisalAppraisalDiscountMember srt:MaximumMember 2023-09-30
0000750574 us-gaap:FairValueMeasurementsNonrecurringMember aubn:ImpairedLoansMember srt:WeightedAverageMember aubn:AppraisalAppraisalDiscountMember 2023-09-30
0000750574 us-gaap:TreasuryStockCommonMember 2022-07-01 2022-09-30
0000750574 aubn:MaxiumLossExposureMember 2023-09-30
0000750574 aubn:AssetRecognizedMember 2023-09-30
0000750574
aubn:CommercialAndIndustrialLoansMember aubn:NonaccrualMember 2023-09-30
0000750574 aubn:ConstructionAndLandDevelopmentLoansMember aubn:NonaccrualMember 2023-09-30
0000750574 aubn:CommercialRealEstateOwnerOccupiedLoansMember aubn:NonaccrualMember 2023-09-30
0000750574 aubn:CommercialRealEstateHotelMotelMember aubn:NonaccrualMember 2023-09-30
0000750574 aubn:CommercialRealEstateMultifamilyMember us-gaap:PassMember 2023-09-30
0000750574
aubn:CommercialRealEstateMultifamilyMember us-gaap:SpecialMentionMember 2023-09-30
0000750574 aubn:CommercialRealEstateMultifamilyMember us-gaap:SubstandardMember 2023-09-30
0000750574 aubn:CommercialRealEstateMultifamilyMember aubn:NonaccrualMember 2023-09-30
0000750574 aubn:CommercialRealEstateOtherLoansMember us-gaap:PassMember 2023-09-30
0000750574 aubn:CommercialRealEstateOtherLoansMember us-gaap:SpecialMentionMember 2023-09-30
0000750574
aubn:CommercialRealEstateOtherLoansMember us-gaap:SubstandardMember 2023-09-30
0000750574 aubn:CommercialRealEstateOtherLoansMember aubn:NonaccrualMember 2023-09-30
0000750574 aubn:ResidentialRealEstateConsumerMortgageLoansMember us-gaap:PassMember 2023-09-30
0000750574 aubn:ResidentialRealEstateConsumerMortgageLoansMember us-gaap:SpecialMentionMember 2023-09-30
0000750574 aubn:ResidentialRealEstateConsumerMortgageLoansMember us-gaap:SubstandardMember 2023-09-30
0000750574
aubn:ResidentialRealEstateConsumerMortgageLoansMember aubn:NonaccrualMember 2023-09-30
0000750574 aubn:ResidentialRealEstateInvestmentPropertyLoansMember us-gaap:PassMember 2023-09-30
0000750574 aubn:ResidentialRealEstateInvestmentPropertyLoansMember us-gaap:SpecialMentionMember 2023-09-30
0000750574 aubn:ResidentialRealEstateInvestmentPropertyLoansMember us-gaap:SubstandardMember 2023-09-30
0000750574 aubn:ResidentialRealEstateInvestmentPropertyLoansMember aubn:NonaccrualMember 2023-09-30
0000750574 aubn:ConsumerInstallmentAndRevolvingLoansMember us-gaap:PassMember 2023-09-30
0000750574 aubn:ConsumerInstallmentAndRevolvingLoansMember us-gaap:SpecialMentionMember 2023-09-30
0000750574 aubn:ConsumerInstallmentAndRevolvingLoansMember us-gaap:SubstandardMember 2023-09-30
0000750574 aubn:ConsumerInstallmentAndRevolvingLoansMember aubn:NonaccrualMember 2023-09-30
0000750574
us-gaap:PassMember 2023-09-30
0000750574 us-gaap:SpecialMentionMember 2023-09-30
0000750574 us-gaap:SubstandardMember 2023-09-30
0000750574 aubn:NonaccrualMember 2023-09-30
0000750574 2023-01-01 2023-01-01
0000750574 aubn:CommercialRealEstateOtherLoansMember 2022-07-01 2022-09-30
0000750574
aubn:ResidentialRealEstateInvestmentPropertyLoansMember 2022-07-01 2022-09-30
0000750574 aubn:ResidentialRealEstateLoansTotalMember 2022-07-01 2022-09-30
0000750574 us-gaap:CommonStockMember 2023-06-30
0000750574 us-gaap:AdditionalPaidInCapitalMember 2023-06-30
0000750574 us-gaap:RetainedEarningsMember 2023-06-30
0000750574 us-gaap:AccumulatedOtherComprehensiveIncomeMember
2023-06-30
0000750574 us-gaap:TreasuryStockCommonMember 2023-06-30
0000750574 2023-06-30
0000750574 us-gaap:CommonStockMember 2023-01-01 2023-09-30
0000750574 us-gaap:AdditionalPaidInCapitalMember 2023-01-01 2023-09-30
0000750574 us-gaap:RetainedEarningsMember 2023-01-01 2023-09-30
0000750574
us-gaap:AccumulatedOtherComprehensiveIncomeMember 2023-01-01 2023-09-30
0000750574 us-gaap:TreasuryStockCommonMember 2023-01-01 2023-09-30
0000750574 us-gaap:CommonStockMember 2022-01-01 2022-09-30
0000750574 us-gaap:AdditionalPaidInCapitalMember 2022-01-01 2022-09-30
0000750574 us-gaap:RetainedEarningsMember 2022-01-01 2022-09-30
0000750574 us-gaap:AccumulatedOtherComprehensiveIncomeMember
2022-01-01 2022-09-30
0000750574 us-gaap:TreasuryStockCommonMember 2022-01-01 2022-09-30
0000750574 us-gaap:CommonStockMember 2022-06-30
0000750574 us-gaap:AdditionalPaidInCapitalMember 2022-06-30
0000750574 us-gaap:RetainedEarningsMember 2022-06-30
0000750574 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2022-06-30
0000750574
us-gaap:TreasuryStockCommonMember 2022-06-30
0000750574 2022-06-30
0000750574 aubn:CommercialAndIndustrialLoansMember 2022-01-01 2022-09-30
0000750574 aubn:ConstructionAndLandDevelopmentLoansMember 2022-01-01 2022-09-30
0000750574 aubn:CommercialRealEstateLoansTotalMember 2022-01-01 2022-09-30
0000750574 aubn:ResidentialRealEstateLoansTotalMember 2022-01-01 2022-09-30
0000750574 aubn:ConsumerInstallmentAndRevolvingLoansMember 2022-01-01 2022-09-30
0000750574 aubn:ConstructionAndLandDevelopmentLoansMember 2023-01-01 2023-09-30
0000750574 aubn:ConsumerInstallmentAndRevolvingLoansMember 2023-01-01 2023-09-30
0000750574 aubn:CommercialRealEstateOtherLoansMember 2022-01-01 2022-09-30
0000750574 aubn:CommercialRealEstateLoansTotalMember
2022-07-01 2022-09-30
0000750574 aubn:CommercialRealEstateLoansTotalMember 2022-01-01 2022-09-30
0000750574 aubn:ResidentialRealEstateInvestmentPropertyLoansMember 2022-01-01 2022-09-30
0000750574 aubn:ResidentialRealEstateLoansTotalMember 2022-01-01 2022-09-30
0000750574 aubn:CommercialAndIndustrialLoansMember 2022-06-30
0000750574 aubn:CommercialRealEstateLoansTotalMember
2022-06-30
0000750574 aubn:ConstructionAndLandDevelopmentLoansMember 2022-06-30
0000750574 aubn:ConsumerInstallmentAndRevolvingLoansMember 2022-06-30
0000750574 aubn:ResidentialRealEstateLoansTotalMember 2022-06-30
0000750574 aubn:CommercialAndIndustrialLoansMember 2023-06-30
0000750574 aubn:CommercialRealEstateLoansTotalMember 2023-06-30
0000750574
aubn:ConstructionAndLandDevelopmentLoansMember 2023-06-30
0000750574 aubn:ConsumerInstallmentAndRevolvingLoansMember 2023-06-30
0000750574 aubn:ResidentialRealEstateLoansTotalMember 2023-06-30
0000750574 aubn:CommercialRealEstateCollateralMember 2023-09-30
0000750574 aubn:BusinessAssetsCollateralMember 2023-09-30
0000750574 aubn:CommercialRealEstateLoansTotalMember
aubn:CommercialRealEstateCollateralMember 2023-09-30
0000750574 aubn:CommercialRealEstateLoansTotalMember 2023-09-30
0000750574 aubn:CommercialAndIndustrialLoansMember aubn:BusinessAssetsCollateralMember 2023-09-30
0000750574 aubn:CommercialAndIndustrialLoansMember 2023-09-30 iso4217:USD xbrli:pure xbrli:shares iso4217:USD xbrli:shares