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INCOME TAXES, DEFERRED TAX ASSETS AND LIABILITIES (Details) - USD ($) $ in Thousands | Sep. 30, 2016 | Sep. 30, 2015
--- | --- | ---
Deferred tax assets |  |  |
Investment tax credits | [1] | $ 76,517 | $ 24,770
Deferred service contract revenue |  | 3,601 | 3,440
Incentive compensation |  | 8,128 | 10,369
Fair value of derivatives |  | 1,179 | 0
Federal net operating losses |  | 27,541 | 0
State net operating losses |  | 18,113 | 12,757
Conservation incentive plan |  | 0 | 2,091
Underrecovered gas costs |  | 3,831 | 2,827
Other |  | 11,668 | 12,762
Total deferred tax assets |  | 150,578 | 69,016
Deferred tax liabilities |  |  |
Property related items |  | (532,027) | (440,420)
Remediation costs |  | (7,928) | (7,641)
Equity investments |  | (37,740) | (37,930)
Postemployment benefits |  | (7,902) | (2,976)
Fair value of derivatives |  | 0 | (3,180)
Conservation incentive plan |  | (14,953) | 0
Other |  | (14,610) | (13,409)
Total deferred tax liabilities |  | (615,160) | (505,556)
Total net deferred tax liabilities |  | (464,582) | (436,540)
NJNG |  |  |
Deferred tax assets |  |  |
Investment tax credits |  | 2,500 | 2,700
NJRCEV |  |  |
Deferred tax liabilities |  |  |
Tax credit carryforward |  | $ 74,000 | $ 22,100
[1] | Includes $2.5 million and $2.7 million for NJNG for fiscal 2016 and fiscal 2015, respectively, which is being amortized over the life of the related assets, and $74 million and $22.1 million for NJRCEV for fiscal 2016 and fiscal 2015, respectively, which is ITC carryforward.

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