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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) | 3 Months Ended
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Dec. 31, 2013
Accounting Policies [Abstract] |
Schedule of Utility Inventory | The following table summarizes gas in storage, at average cost by company as of:
| December 31, 2013 | September 30, 2013
($ in thousands) | Gas in Storage |  | Bcf | Gas in Storage |  | Bcf
NJNG |  | $ | 80,789 |  | 15.7 |  |  | $ | 104,979 |  | 20.4 |
NJRES |  | 202,567 |  | 56.0 |  |  | 209,498 |  | 62.3 |
Total |  | $ | 283,356 |  | 71.7 |  |  | $ | 314,477 |  | 82.7 |

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- Definition Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 2 -Paragraph 6 -Subparagraph a,b,c -Article 5 + Details
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