XML 49 R38.htm IDEA: XBRL DOCUMENT v3.20.2

Fair Value Unobservable Inputs (Details) - Fair Value, Measurements, Nonrecurring [Member] - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Impaired Loans [Member]
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items]
Assets, Fair Value Disclosure	$ 327	$ 99
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	$ 1,322	$ 1,299
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	17.70%
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	20.90%
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	20.20%	11.60%
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	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	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	10.00%	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_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:	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:	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: