Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2013	Mar. 14, 2014	Jun. 30, 2013
Document and entity information [Abstract]
Entity public float			$ 50,893,590
Current fiscal year end date	--12-31
Entity central index key	0000750574
Entity current reporting status	Yes
Entity filer category	Smaller Reporting Company
Entity registrant name	Auburn National Bancorporation, Inc
Entity voluntary filers	No
Entity well known seasoned issuer	No
Entity common stock shares outstanding		3,643,173
Amendment flag	false
Document Type	10-K
Document Year Focus	2013
Document Period Focus	FY
Document Period End Date	Dec. 31, 2013