Auburn National Bancorporation - Parent Only, Balance Sheet (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Assets:
Cash and due from banks	$ 13,437	$ 18,762
Premises and equipment, net	10,442	10,528
Other assets	13,706	11,529
Total assets	751,343	759,833
Liabilities:
Accrued expenses and other liabilities	2,434	2,961
Long-term debt	12,217	47,217
Total liabilities	686,858	689,684
Stockholders' equity:
Total stockholders' equity	64,485	70,149	65,416	56,368
Total liabilities and stockholders' equity	751,343	759,833
Parent Company [Member]
Assets:
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	70,164	76,547
Premises and equipment, net	0	158
Other assets	846	1,162
Total assets	73,418	79,183
Liabilities:
Accrued expenses and other liabilities	1,716	1,817
Long-term debt	7,217	7,217
Total liabilities	8,933	9,034
Stockholders' equity:
Total stockholders' equity	64,485	70,149
Total liabilities and stockholders' equity	$ 73,418	$ 79,183