XML 53 R42.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Troubled Debt Restructuring Defaults (Details) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2018 USD ($)
Financing Receivable, Modifications, Subsequent Default [Line Items] |
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | 1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment | $ 1,259
Commercial Real Estate Other Loans [Member] |
Financing Receivable, Modifications, Subsequent Default [Line Items] |
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | 1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment | $ 1,259
Commercial Real Estate Loans, Total [Member] |
Financing Receivable, Modifications, Subsequent Default [Line Items] |
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | 1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment | $ 1,259

X
- References No definition available. + Details
Name: | aubn_FinancingReceivableModificationsSubsequentDefaultLineItems
Namespace Prefix: | aubn_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953682-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of investment related to financing receivables modified by troubled debt restructurings within the previous 12 months, for which there was a payment default. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953682-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=aubn_CommercialRealEstateOtherLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=aubn_CommercialRealEstateLoansTotalMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |