XML 47 R37.htm IDEA: XBRL DOCUMENT
v3.23.1

Impaired Loans (Details) $ in Thousands | Dec. 31, 2022 USD ($)
--- | ---
Financing Receivable, Impaired [Line Items] |
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance | $ 1,068
Impaired Financing Receivable, with No Related Allowance, Charge-off And Payments Applied | (4)
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 1,064
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance | 1,495
Impaired Financing Receivable, with Related Allowance, Charge-off And Payments Applied | 0
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 1,495
Impaired Financing Receivable, With Related Allowance, Related Allowance | 505
Impaired Financing Receivable, Unpaid Principal Balance | 2,563
Impaired Financing Receivable, Charge-off And Payments Applied | (4)
Impaired Financing Receivable, Recorded Investment | 2,559
Impaired Financing Receivable, Related Allowance | 505
Commercial and Industrial Loans [Member] |
Financing Receivable, Impaired [Line Items] |
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance | 210
Impaired Financing Receivable, with No Related Allowance, Charge-off And Payments Applied | (1)
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 209
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance | 234
Impaired Financing Receivable, with Related Allowance, Charge-off And Payments Applied | 0
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 234
Impaired Financing Receivable, With Related Allowance, Related Allowance | 59
Commercial Real Estate Owner Occupied Loans [Member] |
Financing Receivable, Impaired [Line Items] |
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance | 858
Impaired Financing Receivable, with No Related Allowance, Charge-off And Payments Applied | (3)
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 855
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance | 1,261
Impaired Financing Receivable, with Related Allowance, Charge-off And Payments Applied | 0
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 1,261
Impaired Financing Receivable, With Related Allowance, Related Allowance | 446
Commercial Real Estate Loans, Total [Member] |
Financing Receivable, Impaired [Line Items] |
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance | 858
Impaired Financing Receivable, with No Related Allowance, Charge-off And Payments Applied | (3)
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 855
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance | 1,261
Impaired Financing Receivable, with Related Allowance, Charge-off And Payments Applied | 0
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 1,261
Impaired Financing Receivable, With Related Allowance, Related Allowance | $ 446

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

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

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

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

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_FinancingReceivableImpairedLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition 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 14A -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953550-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of allowance for credit losses related to recorded investment. + 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 (a)(3) -URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableRelatedAllowance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without 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 (a)(4) -URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment in impaired financing receivables for which there is no 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 14A -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953550-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of unpaid principal balance of impaired financing receivables for which there is no 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 (a)(4) -URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment in impaired financing receivables for which there is 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 14A -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953550-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Unpaid principal balance of impaired financing receivables for which there is 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 (a)(4) -URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=aubn_CommercialAndIndustrialLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=aubn_CommercialRealEstateOwnerOccupiedLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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