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REGULATORY PROCEEDINGS (Details) (USD $) | 12 Months Ended | 0 Months Ended | 1 Months Ended | 12 Months Ended |  |  | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2013 | Dec. 31, 2013 Delaware [Member] | May 31, 2013 Artesian Water [Member] | Nov. 30, 2012 Artesian Water [Member] | May 31, 2012 Artesian Water [Member] | Nov. 30, 2013 Artesian Water [Member] | Dec. 31, 2013 Artesian Water [Member] | Dec. 31, 2012 Artesian Water [Member] | Jan. 31, 2012 Artesian Water [Member] | Nov. 30, 2012 Artesian Water Maryland [Member] Resident | Dec. 31, 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 |  | 7 months |  |  |  |  |  |  |  |  |  |
Percentage of rate relief allowed should a rate case not complete, maximum (in hundredths) |  | 15.00% |  |  |  |  |  |  |  |  |  |
Percentage of revenue increase requested for new rates (in hundredths) |  |  |  |  |  |  |  |  | 11.13% |  |  | 34.80%
Amount of annual revenue increase in a filed request to implement new rates |  |  |  |  |  |  |  |  | 6,250,000 |  | 343,000 |
Return on Equity (in hundredths) | 10.00% |  |  |  |  |  |  |  |  |  | 10.00% |
Reclassification of accumulated depreciation to deferred credits | 1,200,000 |  |  |  |  |  |  |  |  |  |  |
Service Territory Expansion Proceedings [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Number of Residents to be Served by Artesian Water Maryland Following the Transfer of CECO Water Assets |  |  |  |  |  |  |  |  |  | 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% |  |  |  |  |  |  |  |  |  |
Increase in annual revenue expected from rate increase application approval |  |  |  |  |  |  |  |  |  |  | 174,000 |
Percentage of Distribution System Improvement Charges annual rate increase application filed by company to regulatory (in hundredths) |  |  | 2.09% | 1.59% | 0.14% | 3.32% |  |  |  |  |  |
Increase Amount Based On Eligible Plant Improvements Since Last Rate Increase |  |  | 2,000,000 | 4,600,000 | 486,000 | 4,900,000 |  |  |  |  |  |
Revenue earned in DSIC rate increases |  |  |  |  |  |  | $ 1,130,000 | $ 42,000 |  |  |  |

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