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ACNB CORPORATION (PARENT COMPANY ONLY) FINANCIAL INFORMATION (Statements of Income) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Condensed Financial Statements, Captions [Line Items] |  |
Gain on sale of securities | $ 85 | $ 0
Other income | 15,948 | 14,149
Income tax benefit | (4,972) | (6,634)
Net Income | 21,748 | 9,788
Comprehensive Income | 19,623 | 9,903
Parent Company |  |
Condensed Financial Statements, Captions [Line Items] |  |
Dividends from banking subsidiary | 6,261 | 5,233
Gain on sale of securities | 47 | 0
Other income | 35 | 31
Total Revenues | 6,343 | 5,264
Expenses | 1,421 | 1,572
Net income before taxes and equity in undistributed earnings of subsidiaries | 4,922 | 3,692
Income tax benefit | 547 | 507
Net income before equity in undistributed earnings of subsidiaries | 5,469 | 4,199
Equity in undistributed earnings of subsidiaries | 16,279 | 5,589
Net Income | 21,748 | 9,788
Comprehensive Income | $ 19,623 | $ 9,903

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