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EMPLOYEE BENEFIT PLANS (Details) | 12 Months Ended
--- | ---
Dec. 31, 2016 USD ($) Age Retiree | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($)
Supplemental Pension Plan [Abstract] |  |  |
Minimum age required for additional benefits to individuals | Age | 50 |  |
Term of matching contribution | 5 years |  |
401(k) Plan [Member] | Artesian Resources [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Percentages of contribution of eligible salaries and wages by Artesian Resources | 2.00% |  |
Percentages of matched employee contributions | 6.00% |  |
Entity contributions and administrative fees | $ 850,000 | $ 1,000,000 | $ 808,000
401(k) Plan [Abstract] |  |  |
Gross pay rate of matched employee contributions | 50.00% |  |
Percentages of additional contribution of eligible salaries and wages by Artesian Resources | 3.00% | 1.00% |
Supplemental Pension Plan [Member] | Artesian Water [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Percentages of contribution of eligible salaries and wages by Artesian Resources | 2.00% |  |
Percentages of matched employee contributions | 6.00% |  |
Entity contributions and administrative fees | $ 227,000 | $ 243,000 | 244,000
Supplemental Pension Plan [Member] | Artesian Water [Member] | Employee Period of Service 1 [Member] |  |  |
Supplemental Pension Plan [Abstract] |  |  |
Contribution per dollar deferred | 3 |  |
Supplemental Pension Plan [Member] | Artesian Water [Member] | Employee Service Period 2 [Member] |  |  |
Supplemental Pension Plan [Abstract] |  |  |
Contribution per dollar deferred | 4 |  |
Supplemental Pension Plan [Member] | Artesian Water [Member] | Employee Service Period 3 [Member] |  |  |
Supplemental Pension Plan [Abstract] |  |  |
Contribution per dollar deferred | 5 |  |
Postretirement Benefit Plan [Member] | Artesian Water [Member] |  |  |
Postretirement Benefit Plan [Abstract] |  |  |
Expense incurred under the plan | $ 80,000 | 113,000 | $ 121,000
Number of eligible retirees | Retiree | 3 |  |
Estimated post retirement liability | $ 186,000 | $ 329,000 |
Expected contributions in next fiscal year by employer | $ 37,000 |  |

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- Definition Represents matching amount for one dollar of eligible salaries and wages deferred. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount of employer's best estimate of contributions expected to be paid to the plan during the next fiscal year beginning after the date of the latest statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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