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Auburn National Bancorporation - Parent Only, Statement of Earnings (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Income: |  |
Other noninterest income | $ 1,486 | $ 1,425
Other Expenses [Abstract] |  |
Total interest expense | 3,676 | 3,594
Total noninterest expense | 17,874 | 16,784
Income Tax Expense (Benefit) | 2,187 | 3,637
Net earnings | 8,834 | 7,846
Parent Company [Member] |  |
Income: |  |
Dividends from bank subsidiary | 6,533 | 3,471
Other noninterest income | 149 | 141
Total income | 6,682 | 3,612
Other Expenses [Abstract] |  |
Total interest expense | 51 | 125
Total noninterest expense | 237 | 225
Operating Expenses | 288 | 350
Earnings Before Income Tax Expense (Benefit) And Equity In Undistributed Earnings Of Bank Subsidary | 6,394 | 3,262
Income Tax Expense (Benefit) | (28) | (58)
Earnings Before Equity In Undistributed Earnings Of Bank Subsidary | 6,422 | 3,320
Equity In Undistributed Earnings Of Bank Subsidary | 2,412 | 4,526
Net earnings | $ 8,834 | $ 7,846

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