XML 100 R87.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Fair Value Financial Instruments (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Carrying (Reported) Amount, Fair Value Disclosure [Member] |  |
Fair Value, Financial Assets: [Abstract] |  |
Fair Value, Financial Instruments, Loans, Net | $ 448,894 | $ 426,303
Fair Value, Financial Instruments, Loans Held For Sale | 1,922 | 1,497
Fair Value, Financial Liabilities: [Abstract] |  |
Fair Value, Financial Instruments, Time Deposits | 188,071 | 208,137
Fair Value, Financial Instruments, Long-term Debt | 3,217 | 3,217
Estimate of Fair Value, Fair Value Disclosure [Member] |  |
Fair Value, Financial Assets: [Abstract] |  |
Fair Value, Financial Instruments, Loans, Net | 447,468 | 428,446
Fair Value, Financial Instruments, Loans Held For Sale | 1,950 | 1,507
Fair Value, Financial Liabilities: [Abstract] |  |
Fair Value, Financial Instruments, Time Deposits | 185,564 | 207,791
Fair Value, Financial Instruments, Long-term Debt | 3,217 | 3,217
Estimate of Fair Value, Fair Value Disclosure [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Fair Value, Financial Assets: [Abstract] |  |
Fair Value, Financial Instruments, Loans, Net | 0 | 0
Fair Value, Financial Instruments, Loans Held For Sale | 0 | 0
Fair Value, Financial Liabilities: [Abstract] |  |
Fair Value, Financial Instruments, Time Deposits | 0 | 0
Fair Value, Financial Instruments, Long-term Debt | 0 | 0
Estimate of Fair Value, Fair Value Disclosure [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair Value, Financial Assets: [Abstract] |  |
Fair Value, Financial Instruments, Loans, Net | 0 | 0
Fair Value, Financial Instruments, Loans Held For Sale | 1,950 | 1,507
Fair Value, Financial Liabilities: [Abstract] |  |
Fair Value, Financial Instruments, Time Deposits | 185,564 | 207,791
Fair Value, Financial Instruments, Long-term Debt | 3,217 | 3,217
Estimate of Fair Value, Fair Value Disclosure [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair Value, Financial Assets: [Abstract] |  |
Fair Value, Financial Instruments, Loans, Net | 447,468 | 428,446
Fair Value, Financial Instruments, Loans Held For Sale | 0 | 0
Fair Value, Financial Liabilities: [Abstract] |  |
Fair Value, Financial Instruments, Time Deposits | 0 | 0
Fair Value, Financial Instruments, Long-term Debt | $ 0 | $ 0

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

X
- References No definition available. + Details
Name: | aubn_FairValueFinancialInstrumentsLoansHeldForSale
Namespace Prefix: | aubn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | aubn_FairValueFinancialInstrumentsLoansNet
Namespace Prefix: | aubn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | aubn_FairValueFinancialInstrumentsLongTermDebt
Namespace Prefix: | aubn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | aubn_FairValueFinancialInstrumentsTimeDeposits
Namespace Prefix: | aubn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Details
Name: | us-gaap_FairValueByMeasurementBasisAxis=us-gaap_CarryingReportedAmountFairValueDisclosureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByMeasurementBasisAxis=us-gaap_EstimateOfFairValueFairValueDisclosureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |