XML 45 R34.htm IDEA: XBRL DOCUMENT
v3.20.2

Loans Textuals (Details) | Jun. 30, 2020
--- | ---
Loan and Lease Disclosure (Textuals) [Abstract] |
Percentage Of Loans Secured By Real Estate | 79.30%

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

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