v3.26.1
Document And Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2025
Mar. 10, 2026
Jun. 30, 2025
Document Information Line Items      
Entity Central Index Key 0000863110    
Document Type 10-K/A    
Document Annual Report true    
Current Fiscal Year End Date --12-31    
Document Period End Date Dec. 31, 2025    
Document Fiscal Year Focus 2025    
Document Transition Report false    
Entity File Number 000-18516    
Entity Registrant Name ARTESIAN RESOURCES CORPORATION    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 51-0002090    
Entity Address, Address Line One 664 Churchmans Road    
Entity Address, City or Town Newark    
Entity Address, State or Province DE    
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 Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag false    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Amendment Flag false    
Document Fiscal Period Focus FY    
Common Class A [Member]      
Document Information Line Items      
Entity Public Float     $ 305,477,587
Entity Common Stock, Shares Outstanding   9,436,930  
Common Class B [Member]      
Document Information Line Items      
Entity Public Float     $ 8,714,838
Entity Common Stock, Shares Outstanding   881,452