XML 81 R68.htm IDEA: XBRL DOCUMENT
v3.19.1

Mortgage Servicing Rights Textuals (Details) | Dec. 31, 2018
--- | ---
Mortgage Servicing [Abstract] |
Weighted Average Amortization In Years | 6.7

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