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BUSINESS SEGMENT AND OTHER OPERATIONS DATA - NET FINANCIAL EARNINGS LOSS RECONCILIATION (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013
Consolidated net financial earnings | $ 4,514 |  | $ 9,738 |  | $ 196,295 |  | $ 113,895 |
Unrealized (gain) loss from derivative instruments and related transactions | (6,585) | [1] | (44,148) | [1] | 45,811 | [1] | (23,682) | [1]
Effects of economic hedging related to natural gas inventory | 38,139 |  | 13,440 |  | (3,409) |  | (9,425) |
Tax adjustments | (12,766) |  | 11,291 |  | (12,497) |  | 12,172 |
NET (LOSS) INCOME | (14,274) |  | 29,155 |  | 166,390 |  | 134,830 |
Transactions Between NJNG and NJRES [Member] |  |  |  |  |  |  |  |
Unrealized (gains) losses related to intercompany transactions | $ (327) |  | $ (708) |  | $ 345 |  | $ (398) |
[1] | Excludes unrealized (gains) losses related to an intercompany transaction between NJNG and NJRES that have been eliminated in consolidation of approximately $(327,000) and $(708,000) for the three months ended and $345,000 and $(398,000) for the nine months ended June 30, 2014 and 2013, respectively.

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