XML 50 R40.htm IDEA: XBRL DOCUMENT v3.23.2

Average Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2022
Impaired Financing Receivable Average Recorded Investment [Line Items]
Impaired Financing Receivable Average Recorded Investment	$ 180	$ 221
Impaired Financing Receivable Interest Income Accrual Method	0	0
Commercial Real Estate Other Loans [Member]
Impaired Financing Receivable Average Recorded Investment [Line Items]
Impaired Financing Receivable Average Recorded Investment	180	212
Impaired Financing Receivable Interest Income Accrual Method	0	0
Commercial Real Estate Loans, Total [Member]
Impaired Financing Receivable Average Recorded Investment [Line Items]
Impaired Financing Receivable Average Recorded Investment	180	212
Impaired Financing Receivable Interest Income Accrual Method	0	0
Residential Real Estate Investment Property Loans [Member]
Impaired Financing Receivable Average Recorded Investment [Line Items]
Impaired Financing Receivable Average Recorded Investment	0	9
Impaired Financing Receivable Interest Income Accrual Method	0	0
Residential Real Estate Loans, Total [Member]
Impaired Financing Receivable Average Recorded Investment [Line Items]
Impaired Financing Receivable Average Recorded Investment	0	9
Impaired Financing Receivable Interest Income Accrual Method	$ 0	$ 0

X

- References

No definition available.

+ Details

Name:	aubn_ImpairedFinancingReceivableAverageRecordedInvestmentLineItems
Namespace Prefix:	aubn_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(1)
-URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 17
-URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5258-111524

+ Details

Name:	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(2)
-URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524

+ Details

Name:	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	aubn_AverageImpairedLoansByClassAxis=aubn_CommercialRealEstateOtherLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	aubn_AverageImpairedLoansByClassAxis=aubn_CommercialRealEstateLoansTotalMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	aubn_AverageImpairedLoansByClassAxis=aubn_ResidentialRealEstateInvestmentPropertyLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	aubn_AverageImpairedLoansByClassAxis=aubn_ResidentialRealEstateLoansTotalMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: