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REGULATION (Tables) | 12 Months Ended
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Sep. 30, 2013
Regulated Operations [Abstract] |
Schedule of Regulatory Assets and Liabilities] | Regulatory assets and liabilities included on the Consolidated Balance Sheets as of September 30, are comprised of the following:
(Thousands) | 2013 | 2012
Regulatory assets-current |  |
Underrecovered gas costs | $ | 953 |  | $ | 7,053 |
Conservation Incentive Program | 18,887 |  | 25,681 |
New Jersey Clean Energy Program | 14,532 |  | — |
Total current regulatory assets | $ | 34,372 |  | $ | 32,734 |
Regulatory assets-noncurrent |  |
Environmental remediation costs |  |
Expended, net of recoveries | $ | 46,968 |  | $ | 59,745 |
Liability for future expenditures | 183,600 |  | 182,000 |
Deferred income taxes | 10,718 |  | 11,405 |
Derivatives, net | 19 |  | — |
SAVEGREEN | 30,004 |  | 26,025 |
New Jersey Clean Energy Program | — |  | 5,619 |
Postemployment and other benefit costs | 101,415 |  | 142,495 |
Deferred Superstorm Sandy costs | 14,822 |  | — |
Other noncurrent regulatory assets | 14,656 |  | 13,974 |
Total noncurrent regulatory assets | $ | 402,202 |  | $ | 441,263 |
Regulatory liability-current |  |
Derivatives, net | 1,456 |  | 1,169 |
Total current regulatory liabilities | $ | 1,456 |  | $ | 1,169 |
Regulatory liabilities-noncurrent |  |
Cost of removal obligation | $ | 79,315 |  | $ | 65,994 |
Derivatives, net | — |  | 1,000 |
Other noncurrent regulatory liabilities | 332 |  | 83 |
Total noncurrent regulatory liabilities | $ | 79,647 |  | $ | 67,077 |

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