Auburn National Bancorporation - Parent Only, Statement of Earnings (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Income:
Other noninterest income	$ 1,849	$ 1,870
Other Expenses [Abstract]
Total interest expense	11,607	8,046
Total noninterest expense	22,166	22,594
Income Tax Expense (Benefit)	2,000	(777)
Net earnings	6,397	1,395
Parent Company [Member]
Income:
Dividends from bank subsidiary	3,773	3,776
Other noninterest income	1	8
Total income	3,774	3,784
Other Expenses [Abstract]
Total noninterest expense	258	239
Operating Expenses	258	239
Earnings Before Income Tax Expense (Benefit) And Equity In Undistributed Earnings Of Bank Subsidary	3,516	3,545
Income Tax Expense (Benefit)	(46)	(30)
Earnings Before Equity In Undistributed Earnings Of Bank Subsidary	3,562	3,575
Equity In Undistributed Earnings Of Bank Subsidary	2,835	(2,180)
Net earnings	$ 6,397	$ 1,395