Long-Term Debt Textuals (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Long-term debt:
Securities Pledged For Long-term FHLB Advances	$ 1.00	$ 1.50
Qualifying Residential Mortgages Pledged For Long-Term Advances	42.10	45.50
Securities Pledged For Long-term Repurchase Agreements	$ 0	$ 19.00

Amount of pledged securities used to secure Federal Home Loan Bank (FHLB) long-term advances

No definition available.

Name:	aubn_SecuritiesPledgedForLongTermRepurchaseAgreements
Namespace Prefix:	aubn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant