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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 605
-SubTopic 10
-Section S99
-Paragraph 1
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Staff Accounting Bulletin (SAB)
-Number Topic 13
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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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+ References

No definition available.

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Amount of public utility's requested rate increase (decrease) with regulatory agency.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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Rate and Regulatory Matters (Narrative) (Details) $ in Thousands					1 Months Ended								3 Months Ended		12 Months Ended
	Jul. 02, 2014 USD ($)	Apr. 19, 2014 USD ($)	Nov. 25, 2013 USD ($)	Nov. 08, 2013 USD ($)	Nov. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Oct. 31, 2014 USD ($)	Jun. 30, 2014 USD ($)	Oct. 31, 2013 USD ($) N	Mar. 31, 2013 USD ($)	Aug. 31, 2012 USD ($)	Jun. 30, 2011 USD ($)	Dec. 31, 2015 USD ($)	Jun. 30, 2015 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Regulatory Liabilities [Line Items]
Regulatory Liability - Cost of Utility Plant Removal													$ 10,876		$ 10,876	$ 10,273
Acquisition premiums to be recovered													600		600
Pinelands Water and Wastewater [Member]
Regulatory Liabilities [Line Items]
Originally filed increase in annual operating revenue													300
Pinelands Wastewater [Member]
Regulatory Liabilities [Line Items]
Originally filed increase in annual operating revenue													200
Twin Lakes [Member]
Regulatory Liabilities [Line Items]
Originally filed increase in annual operating revenue					$ 200								$ 200
New Jersey Board of Public Utilities [Member]
Regulatory Liabilities [Line Items]
Approved increase in annual operating revenues														$ 5,000
New Jersey Board of Public Utilities [Member] \| Middlesex [Member]
Regulatory Liabilities [Line Items]
Approved increase in annual operating revenues								$ 4,200
Originally filed increase in annual operating revenue				$ 10,600		$ 9,500
Amended filed increase in annual operating revenue				$ 8,100											5,000
Base rate amount								$ 208,600							$ 219,000
Return on equity								9.75%							9.75%
Projected annual revenue															$ 100
New Jersey Board of Public Utilities [Member] \| TESI [Member]
Regulatory Liabilities [Line Items]
Approved increase in annual operating revenues							$ 100
New Jersey Board of Public Utilities [Member] \| Pinelands Water and Pinelands Wastewater [Member]
Regulatory Liabilities [Line Items]
Approved increase in annual operating revenues										$ 200
Originally filed increase in annual operating revenue											$ 300
Approved increase in annual operating revenue (percentage)										50.00%
Delaware Public Service Commission [Member] \| Tidewater [Member]
Regulatory Liabilities [Line Items]
Originally filed increase in annual operating revenue			$ 3,900
Approved increase in annual operating revenue (percentage)	6.50%
Amended filed increase in annual operating revenue	$ 2,500	$ 800
Refund of previously deferred revenues	$ 400
Delaware Public Service Commission [Member] \| TESI [Member]
Regulatory Liabilities [Line Items]
Approved increase in annual operating revenues									$ 200
Approved increase in annual operating revenue (percentage)							33.50%
Number of customers \| N									600
Purchase of the wastewater utility assets									$ 400
Delaware Public Service Commission [Member] \| Southern Shores [Member]
Regulatory Liabilities [Line Items]
Originally filed increase in annual operating revenue												$ 100