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v3.3.1.900

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 |  |  |  |

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