Commitment and Contingencies (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Commitments to Extend Credit [Member]
Loss Contingencies [Line Items]
Amount of Commitment	$ 38,870	$ 48,525
Financial Standby Letter of Credit [Member]
Loss Contingencies [Line Items]
Amount of Commitment	$ 8,562	$ 7,093

Amount of unused extension of credit for loan commitments and standby letters of Credit

No definition available.

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