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Capitalization (Details Narrative) (USD $) In Thousands, except Share data, unless otherwise specified | 1 Months Ended | 12 Months Ended | 1 Months Ended |  | 1 Months Ended |  |  |  | 1 Months Ended |  | 12 Months Ended |  | 1 Months Ended |  | 12 Months Ended
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Nov. 30, 2012 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Jan. 31, 2013 Series DD | Dec. 31, 2012 Series S - W | May 31, 2012 New Jersey State Revolving Fund | May 31, 2012 OOMember | May 31, 2012 PPMember | Dec. 31, 2013 Delaware State Revolving Fund | Dec. 31, 2013 New Jersey Economic Development Authority | Dec. 31, 2013 New Jersey Environmental Infrastructure Trust | Dec. 31, 2012 Series QQ | May 31, 2013 New Jersey Environmental Infrastructure Trust | May 31, 2013 New Jersey Environmental Infrastructure Trust First Mortgage Bonds - Series TT | May 31, 2013 New Jersey Environmental Infrastructure Trust First Mortgage Bonds - Series UU | Mar. 31, 2011 Tidewater Delaware State Revolving Fund | Mar. 31, 2011 Southern Shores Delaware State Revolving Fund | Dec. 31, 2013 Southern Shores Delaware State Revolving Fund | Dec. 31, 2013 Nonredeemable Preferred Stock $7.00 Series | Dec. 31, 2013 Convertible Preferred Stock $7.00 Series | Aug. 31, 2013 Convertible Preferred Stock $8.00 Series | Dec. 31, 2013 Convertible Preferred Stock $8.00 Series | Dec. 31, 2013 Outside Director Stock Compensation Plan | Dec. 31, 2012 Outside Director Stock Compensation Plan | Dec. 31, 2011 Outside Director Stock Compensation Plan | Dec. 31, 2013 Dividend Reinvestment and Common Stock Purchase Plan
Schedule of Capitalization [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common Stock, Shares Authorized |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,300,000
Authorized shares under plan |  | 300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 81,997 |  |  |
Dividend Reinvestment & Common Stock Purchase Plan, cumulative shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,200,000
Common stock granted and issued under plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5,432 | 5,768 | 3,833 |
Issuance of shares under the DRP |  | 1,653 | 1,587 | 1,504 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum number of shares authorized for grant |  | 200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100,000 |  |  |
Preferred stock dividends in arrears |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares repurchased in the period,shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 93 |  |  |  |  |  |  |
Shares repurchased in the period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 9 |  |  |  |  |  |  |
Shares issued upon conversion |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 13.714 |  |  |  |
Convertible preferred stock converted, value |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 500 |  |  |  |  |
Convertible preferred stock converted, shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,000 |  |  |  |  |
Stock issued upon conversion of convertible preferred stock (shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 54,856 |  |  |  |  |
Long-term debt |  | 133,112 | 140,361 |  |  |  |  |  |  | 2,700 | 55,400 | 9,700 |  | 3,900 | 2,900 | 1,000 |  |  | 1,400 |  |  |  |  |  |  |  |
Percentage of stock that may be redeemed in a given calander year |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10.00% |  |  |  |  |  |
Repayment of first mortgage bonds | 57,500 |  |  |  | 51,500 | 6,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long term debt, face amount |  |  |  |  |  |  | 3,900 | 3,000 | 900 |  |  |  |  |  |  |  | 2,800 | 1,600 |  |  |  |  |  |  |  |  |
Premium on debt |  | 2,072 | 2,236 |  |  |  |  |  |  |  |  |  | 2,200 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  | 0.00% |  |  |  |  |  |  | 0.00% |  | 3.75% | 3.75% |  |  |  |  |  |  |  |  |
Interest rate, minimum |  |  |  |  |  |  |  |  | 2.00% |  |  |  |  |  |  | 3.00% |  |  |  |  |  |  |  |  |  |  |
Interest rate, maximum |  |  |  |  |  |  |  |  | 5.00% |  |  |  |  |  |  | 3.25% |  |  |  |  |  |  |  |  |  |  |
Maturity date |  |  |  |  |  |  |  | Aug. 01, 2031 | Aug. 01, 2031 |  |  |  |  |  | Aug. 01, 2032 | Aug. 01, 2032 | Jul. 01, 2031 | Nov. 30, 2030 |  |  |  |  |  |  |  |  |
Weighted average interest rate |  | 4.23% | 4.34% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deobligated principal payments |  | 64 | 255 | 560 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other long term debt |  | 45,000 | 47,700 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customer advances |  | $ 21,837 | $ 21,990 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 + Details
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- Definition Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 + Details
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- Definition Amount of a stock repurchase plan authorized by an entity's Board of Directors. + References No definition available. + Details
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