XML 49 R38.htm IDEA: XBRL DOCUMENT
v3.21.2

Fair Value Unobservable Inputs (Details) - Fair Value, Measurements, Nonrecurring [Member] - USD ($) $ in Thousands | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Impaired Loans [Member] |  |
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items] |  |
Assets, Fair Value Disclosure | $ 296 | $ 319
Impaired Loans [Member] | Appraisal, Appraisal Discount [Member] | Minimum |  |
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items] |  |
Unobservable Input, Input Percent |  | 10.00%
Impaired Loans [Member] | Appraisal, Appraisal Discount [Member] | Maximum |  |
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items] |  |
Unobservable Input, Input Percent |  | 10.00%
Impaired Loans [Member] | Appraisal, Appraisal Discount [Member] | Weighted Average |  |
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items] |  |
Unobservable Input, Input Percent |  | 10.00%
Impaired Loans [Member] | Discounted Cash Flow, Discount Rate [Member] | Minimum |  |
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items] |  |
Unobservable Input, Input Percent | 10.00% |
Impaired Loans [Member] | Discounted Cash Flow, Discount Rate [Member] | Maximum |  |
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items] |  |
Unobservable Input, Input Percent | 10.00% |
Impaired Loans [Member] | Discounted Cash Flow, Discount Rate [Member] | Weighted Average |  |
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items] |  |
Unobservable Input, Input Percent | 10.00% |
Mortgage Servicing Rights [Member] |  |
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items] |  |
Assets, Fair Value Disclosure | $ 1,360 | $ 1,330
Mortgage Servicing Rights [Member] | Discounted Cash Flow, Prepayment Speed [Member] | Minimum |  |
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items] |  |
Unobservable Input, Input Percent | 7.70% | 18.20%
Mortgage Servicing Rights [Member] | Discounted Cash Flow, Prepayment Speed [Member] | Maximum |  |
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items] |  |
Unobservable Input, Input Percent | 15.70% | 36.40%
Mortgage Servicing Rights [Member] | Discounted Cash Flow, Prepayment Speed [Member] | Weighted Average |  |
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items] |  |
Unobservable Input, Input Percent | 15.10% | 20.70%
Mortgage Servicing Rights [Member] | Discounted Cash Flow, Discount Rate [Member] | Minimum |  |
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items] |  |
Unobservable Input, Input Percent | 9.50% | 10.00%
Mortgage Servicing Rights [Member] | Discounted Cash Flow, Discount Rate [Member] | Maximum |  |
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items] |  |
Unobservable Input, Input Percent | 11.50% | 12.00%
Mortgage Servicing Rights [Member] | Discounted Cash Flow, Discount Rate [Member] | Weighted Average |  |
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items] |  |
Unobservable Input, Input Percent | 9.50% | 10.00%

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

X
- References No definition available. + Details
Name: | aubn_UnobservableInputInputPercent
Namespace Prefix: | aubn_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
Name: | us-gaap_AssetsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | aubn_FairValueByMeasurementTypeAxis=aubn_ImpairedLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsNonrecurringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | aubn_FairValueAssetsMeasuredOnNonrecurringBasisValuationTechniquesAxis=aubn_AppraisalAppraisalDiscountMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_WeightedAverageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | aubn_FairValueAssetsMeasuredOnNonrecurringBasisValuationTechniquesAxis=aubn_DiscountedCashFlowDiscountRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | aubn_FairValueByMeasurementTypeAxis=aubn_MortgageServicingRightsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | aubn_FairValueAssetsMeasuredOnNonrecurringBasisValuationTechniquesAxis=aubn_DiscountedCashFlowPrepaymentSpeedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |