BASIS OF PRESENTATION AND IMPACT OF RECENT ACCOUNTING PRONOUNCEMENTS (Details)	9 Months Ended
Sep. 30, 2018 Subsidiary
BASIS OF PRESENTATION AND IMPACT OF RECENT ACCOUNTING PRONOUNCEMENTS [Abstract]
Number of wholly owned subsidiaries	9
Number of regulated public utilities	5
Number of subsidiaries not regulated	4

Wholly owned subsidiaries of Artesian Resources Corporation.

No definition available.

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Namespace Prefix:	artna_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration