XML 46 R1.htm IDEA: XBRL DOCUMENT v2.4.0.6
Document and Entity Information (USD $)
 12 Months Ended
Dec. 31, 2012
Mar. 04, 2013
Class A Stock [Member]
Jun. 30, 2012
Class A Stock [Member]
Mar. 04, 2013
Class B Stock [Member]
Jun. 30, 2012
Class B Stock [Member]
Entity Information [Line Items]          
Entity Registrant Name Artesian Resources Corporation        
Entity Central Index Key 0000863110        
Current Fiscal Year End Date --12-31        
Entity Well-known Seasoned Issuer No        
Entity Voluntary Filers No        
Entity Current Reporting Status Yes        
Entity Filer Category Accelerated Filer        
Entity Public Float     $ 162,630,000   $ 4,741,000
Entity Common Stock, Shares Outstanding   7,838,093   881,452  
Document Fiscal Year Focus 2012        
Document Fiscal Period Focus FY        
Document Type 10-K        
Amendment Flag false        
Document Period End Date Dec. 31, 2012