XML 82 R69.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Mortgage Servicing Rights Textuals (Details) | Dec. 31, 2017
--- | ---
Mortgage Servicing [Abstract] |
Weighted Average Amortization In Years | 5.9

X
- References No definition available. + Details
Name: | aubn_WeightedAverageAmortizationInYears
Namespace Prefix: | aubn_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

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