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Auburn National Bancorporation - Parent Only, Statement of Earnings (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Income:    
Other noninterest income $ 1,870 $ 1,695
Other Expenses [Abstract]    
Total interest expense 8,046 2,379
Total noninterest expense 22,594 19,823
Income Tax Expense (Benefit) (777) 2,503
Net earnings 1,395 10,346
Parent Company [Member]    
Income:    
Dividends from bank subsidiary 3,776 3,719
Other noninterest income 8 78
Total income 3,784 3,797
Other Expenses [Abstract]    
Total noninterest expense 239 326
Operating Expenses 239 326
Earnings Before Income Tax Expense (Benefit) And Equity In Undistributed Earnings Of Bank Subsidary 3,545 3,471
Income Tax Expense (Benefit) (30) (48)
Earnings Before Equity In Undistributed Earnings Of Bank Subsidary 3,575 3,519
Equity In Undistributed Earnings Of Bank Subsidary (2,180) 6,827
Net earnings $ 1,395 $ 10,346