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Network
2411403 - Disclosure - INCOME TAXES (Schedule of Reconciliations of the Statutory Federal Income Tax) (Details)
(http://www.acnb.com/role/IncomeTaxesScheduleOfReconciliationsOfStatutoryFederalIncomeTaxDetails)
Table(Implied)
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0000715579 (http://www.sec.gov/CIK)
Income Tax Disclosure [Abstract]Period [Axis]
2016-01-01 - 2016-12-31
2015-01-01 - 2015-12-31
2014-01-01 - 2014-12-31
Income Tax Disclosure [Abstract]
 
 
 
Federal income tax at statutory rate
34.00%  
34.00%  
34.00%  
State income taxes, net of federal benefit
0.30%  
0.20%  
0.30%  
Tax-exempt income
(4.80%) 
(4.40%) 
(3.50%) 
Earnings on investment in bank-owned life insurance
(2.60%) 
(2.50%) 
(2.80%) 
Rehabilitation and low-income housing credits
(2.00%) 
(2.00%) 
(5.10%) 
Other
0.80%  
0.20%  
0.10%  
Effective Income Tax Rate, Total
25.70%  
 
25.50%  
 
23.00%