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Basis of Presentation and Nature of Operations (Details)	9 Months Ended
	Sep. 30, 2022 bank
Business Acquisition [Line Items]
Number of community banking office locations, ACNB	29
Adams, Cumberland, Franklin and York Counties, Pennsylvania
Business Acquisition [Line Items]
Number of community banking office locations, ACNB	18
Carroll and Frederick Counties, Maryland
Business Acquisition [Line Items]
Number of community banking office locations, ACNB	11

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- Definition

Number of Community Banking Offices, Parent

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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- Details

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X

- Details

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