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REGULATORY PROCEEDINGS (Details) (USD $)
 9 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2013
Delaware [Member]
Sep. 30, 2013
Artesian Water [Member]
Sep. 30, 2012
Artesian Water [Member]
Sep. 30, 2013
Artesian Water [Member]
Sep. 30, 2012
Artesian Water [Member]
Dec. 31, 2013
Artesian Water [Member]
Dec. 31, 2012
Artesian Water [Member]
May 31, 2013
Artesian Water [Member]
Nov. 30, 2012
Artesian Water [Member]
May 31, 2012
Artesian Water [Member]
Sep. 30, 2013
Artesian Water Maryland [Member]
Customer
Sep. 30, 2013
Artesian Wastewater [Member]
Oct. 08, 2013
Artesian Wastewater [Member]
Jan. 18, 2013
Artesian Wastewater [Member]
Rate Proceedings [Abstract]                              
Maximum temporary annual rate increase subject to 15% gross water sales limitation   $ 2,500,000                          
Percentage of gross water sales maximum temporary annual rate increase subject to $2.5 million limitation (in hundredths) 15.00%                            
Period to complete rate case by law (in months)   7 months                          
Percentage of rate relief allowed should a rate case not complete, maximum (in hundredths) 15.00%                            
Percentage of revenue increase in a filed request to implement new rates (in hundredths)                             34.80%
Amount of annual revenue increase in a filed request to implement new rates                             343,000
Increase in annual revenue expected from rate increase application approval                           174,000  
Return on Equity (in hundredths)                         10.00%    
Service Territory Expansion Proceedings [Abstract]                              
Number of customers served by CECO water systems                       200      
Other Proceedings [Abstract]                              
Distribution System Improvement Charge rate increase applied between base rate filings, maximum (in hundredths)   7.50%                          
Distribution System Improvement Charge rate increase maximum within a 12-month period (in hundredths)   5.00%                          
Percentage of Distribution System Improvement Charges annual rate increase application filed by company to regulatory (in hundredths)                 0.14% 1.45% 0.14%        
Increase in revenue due to DSIC rate increase application, annually         2,000,000   5,600,000 486,000              
Revenue earned in DSIC rate increases     $ 336,000 $ 23,000 $ 839,000 $ 23,000