Auburn National Bancorporation - Parent Only, Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Assets:
Cash And Due From Banks	$ 11,608	$ 11,210
Premises and equipment, net	46,575	41,724
Other assets	26,110	10,840
Total assets	1,023,888	1,105,150
Liabilities:
Accrued expenses and other liabilities	2,959	3,733
Total liabilities	955,847	1,001,424
Stockholders' equity:
Total stockholders' equity	68,041	103,726	$ 107,690
Total liabilities and stockholders' equity	1,023,888	1,105,150
Parent Company [Member]
Assets:
Cash And Due From Banks	1,700	2,705
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	65,967	100,951
Other assets	522	630
Total assets	68,189	104,286
Liabilities:
Accrued expenses and other liabilities	148	560
Total liabilities	148	560
Stockholders' equity:
Total stockholders' equity	68,041	103,726
Total liabilities and stockholders' equity	$ 68,189	$ 104,286