Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2020	Nov. 03, 2020
Entity Information [Line Items]
Entity Registrant Name	ARTESIAN RESOURCES CORPORATION
Entity Central Index Key	0000863110
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Shell Company	false
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	000-18516
Entity Tax Identification Number	51-0002090
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	664 Churchmans Road
Entity Address, City or Town	Newark
Entity Address, Postal Zip Code	19702
City Area Code	302
Local Phone Number	453 – 6900
Title of 12(b) Security	Common Stock
Trading Symbol	ARTNA
Security Exchange Name	NASDAQ
Entity Address, State or Province	DE
Class A Stock [Member]
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		8,459,518
Class B Stock [Member]
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		881,442