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REGULATION (Tables) | 12 Months Ended
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Sep. 30, 2017
Regulated Operations [Abstract] |
Schedule of Regulatory Assets | Regulatory assets and liabilities included on the Consolidated Balance Sheets as of September 30, are comprised of the following:
(Thousands) | 2017 | 2016
Regulatory assets-current |  |
Conservation Incentive Program | $ | 17,669 |  | $ | 36,957 |
New Jersey Clean Energy Program | 14,202 |  | 14,232 |
Underrecovered gas costs | 9,910 |  | — |
Derivatives at fair value, net | 9,010 |  | 3,097 |
Total current regulatory assets | $ | 50,791 |  | $ | 54,286 |
Regulatory assets-noncurrent |  |
Environmental remediation costs: |  |
Expended, net of recoveries | $ | 28,547 |  | $ | 19,595 |
Liability for future expenditures | 149,000 |  | 172,000 |
Deferred income taxes | 21,795 |  | 20,273 |
Derivatives at fair value, net | — |  | 23,384 |
SAVEGREEN | 16,302 |  | 25,208 |
Postemployment and other benefit costs | 141,433 |  | 157,027 |
Deferred Superstorm Sandy costs | 13,030 |  | 15,201 |
Other noncurrent regulatory assets | 5,812 |  | 8,606 |
Total noncurrent regulatory assets | $ | 375,919 |  | $ | 441,294 |
Regulatory liability-current |  |
Derivatives at fair value, net | 78 |  | — |
Overrecovered gas costs | — |  | 9,469 |
Total current regulatory liabilities | $ | 78 |  | $ | 9,469 |
Regulatory liabilities-noncurrent |  |
Cost of removal obligation | $ | 7,902 |  | $ | 30,549 |
New Jersey Clean Energy Program | 5,795 |  | 10,657 |
Other noncurrent regulatory liabilities | 664 |  | 205 |
Derivatives at fair value, net | 146 |  | — |
Total noncurrent regulatory liabilities | $ | 14,507 |  | $ | 41,411 |
Schedule of Regulatory Liabilities | Regulatory assets and liabilities included on the Consolidated Balance Sheets as of September 30, are comprised of the following:
(Thousands) | 2017 | 2016
Regulatory assets-current |  |
Conservation Incentive Program | $ | 17,669 |  | $ | 36,957 |
New Jersey Clean Energy Program | 14,202 |  | 14,232 |
Underrecovered gas costs | 9,910 |  | — |
Derivatives at fair value, net | 9,010 |  | 3,097 |
Total current regulatory assets | $ | 50,791 |  | $ | 54,286 |
Regulatory assets-noncurrent |  |
Environmental remediation costs: |  |
Expended, net of recoveries | $ | 28,547 |  | $ | 19,595 |
Liability for future expenditures | 149,000 |  | 172,000 |
Deferred income taxes | 21,795 |  | 20,273 |
Derivatives at fair value, net | — |  | 23,384 |
SAVEGREEN | 16,302 |  | 25,208 |
Postemployment and other benefit costs | 141,433 |  | 157,027 |
Deferred Superstorm Sandy costs | 13,030 |  | 15,201 |
Other noncurrent regulatory assets | 5,812 |  | 8,606 |
Total noncurrent regulatory assets | $ | 375,919 |  | $ | 441,294 |
Regulatory liability-current |  |
Derivatives at fair value, net | 78 |  | — |
Overrecovered gas costs | — |  | 9,469 |
Total current regulatory liabilities | $ | 78 |  | $ | 9,469 |
Regulatory liabilities-noncurrent |  |
Cost of removal obligation | $ | 7,902 |  | $ | 30,549 |
New Jersey Clean Energy Program | 5,795 |  | 10,657 |
Other noncurrent regulatory liabilities | 664 |  | 205 |
Derivatives at fair value, net | 146 |  | — |
Total noncurrent regulatory liabilities | $ | 14,507 |  | $ | 41,411 |

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