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Loans (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
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Loans And Leases Receivable Disclosure |  |
Loans and Leases Receivable, Gross, Commercial | $ 54,329 us-gaap_LoansAndLeasesReceivableCommercial | $ 57,780 us-gaap_LoansAndLeasesReceivableCommercial
Construction And Land Development Loans | 37,298 aubn_ConstructionAndLandDevelopmentLoans | 36,479 aubn_ConstructionAndLandDevelopmentLoans
Commericial Real Estate Loans [Abstract] |  |
Commercial Real Estate Owner Occupied Loans | 52,296 aubn_CommercialRealEstateOwnerOccupiedLoans | 56,102 aubn_CommercialRealEstateOwnerOccupiedLoans
Commerical Real Estate Other Loans | 139,710 aubn_CommericalRealEstateOtherLoans | 118,818 aubn_CommericalRealEstateOtherLoans
Total Commercial Real Estate Loans | 192,006 aubn_CommericialRealEstateLoans | 174,920 aubn_CommericialRealEstateLoans
Residential Real Estate Loans [Abstract] |  |
Consumer Mortgage Loans | 66,489 aubn_ConsumerMortgageLoans | 57,871 aubn_ConsumerMortgageLoans
Residential Real Estate Investment Property Loans | 41,152 aubn_ResidentialRealEstateInvestmentPropertyLoans | 43,835 aubn_ResidentialRealEstateInvestmentPropertyLoans
Total Residential Real Estate Loans | 107,641 aubn_ResidentialRealEstateLoans | 101,706 aubn_ResidentialRealEstateLoans
Consumer Installment And Revolving Loans | 12,335 aubn_ConsumerInstallmentAndRevolvingLoans | 12,893 aubn_ConsumerInstallmentAndRevolvingLoans
Loans and Leases Receivable, Gross, Carrying Amount | 403,609 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount | 383,778 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
Loans and Leases Receivable Deferred Income | (655)aubn_LoansAndLeasesReceivableDeferredIncome1 | (439)aubn_LoansAndLeasesReceivableDeferredIncome1
Loans, net of unearned income | $ 402,954 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome | $ 383,339 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome

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- Definition Amount before allowance of commercial loans and leases receivable includes, but not limited to, commercial and industrial loans, agricultural loans, mortgage loans, promissory notes, interbank and other loans to financial institutions, draws against credit facilities, trade financing, lease financings. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Subparagraph a, b -Article 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(a),(b)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522 + Details
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- Definition Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5074-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522 + Details
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