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Basis of Presentation and Nature of Operations (Details) | 9 Months Ended
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Sep. 30, 2018 bank
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Number of community banking office locations, ACNB | 22
Number of community banking office locations, NWSB | 7

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- Definition Number of full-service retail bank offices acquired. + References No definition available. + Details
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- Definition Number of Full-service Bank Offices attributable to the Parent Company. + References No definition available. + Details
Name: | acnb_NumberofFullserviceBankOfficesParent
Namespace Prefix: | acnb_
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Balance Type: | na
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- References No definition available. + Details
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