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FAIR VALUE - HIERARCHY (Details) - USD ($) $ in Thousands | Sep. 30, 2017 | Sep. 30, 2016
--- | --- | ---
Assets |  |
Derivative assets | $ 39,245 | $ 35,191
Liabilities |  |
Derivative liabilities | 57,874 | 86,332
Fair Value, Measurements, Recurring |  |
Assets |  |
Available for sale equity securities | 65,752 | 55,789
Other | 1,090 | 1,444
Total assets at fair value | 106,199 | 126,496
Liabilities |  |
Total liabilities at fair value | 57,874 | 86,332
Fair Value, Measurements, Recurring | Physical commodity contracts |  |
Assets |  |
Derivative assets | 21,866 | 10,216
Liabilities |  |
Derivative liabilities | 25,371 | 14,026
Fair Value, Measurements, Recurring | Financial commodity contracts |  |
Assets |  |
Derivative assets | 17,335 | 24,974
Liabilities |  |
Derivative liabilities | 24,036 | 49,201
Fair Value, Measurements, Recurring | Foreign currency contracts |  |
Assets |  |
Derivative assets | 44 | 1
Liabilities |  |
Derivative liabilities | 0 | 32
Fair Value, Measurements, Recurring | Interest rate contracts |  |
Liabilities |  |
Derivative liabilities | 8,467 | 23,073
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Assets |  |
Available for sale equity securities | 65,752 | 55,789
Other | 1,090 | 1,444
Total assets at fair value | 84,289 | 116,279
Liabilities |  |
Total liabilities at fair value | 24,036 | 49,201
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Physical commodity contracts |  |
Assets |  |
Derivative assets | 0 | 0
Liabilities |  |
Derivative liabilities | 0 | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Financial commodity contracts |  |
Assets |  |
Derivative assets | 17,335 | 24,974
Liabilities |  |
Derivative liabilities | 24,036 | 49,201
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Foreign currency contracts |  |
Assets |  |
Derivative assets | 0 | 0
Liabilities |  |
Derivative liabilities | 0 | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Interest rate contracts |  |
Liabilities |  |
Derivative liabilities | 0 | 0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) |  |
Assets |  |
Available for sale equity securities | 0 | 0
Other | 0 | 0
Total assets at fair value | 21,910 | 10,217
Liabilities |  |
Total liabilities at fair value | 33,838 | 37,131
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Physical commodity contracts |  |
Assets |  |
Derivative assets | 21,866 | 10,216
Liabilities |  |
Derivative liabilities | 25,371 | 14,026
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Financial commodity contracts |  |
Assets |  |
Derivative assets | 0 | 0
Liabilities |  |
Derivative liabilities | 0 | 0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Foreign currency contracts |  |
Assets |  |
Derivative assets | 44 | 1
Liabilities |  |
Derivative liabilities | 0 | 32
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Interest rate contracts |  |
Liabilities |  |
Derivative liabilities | 8,467 | 23,073
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) |  |
Assets |  |
Available for sale equity securities | 0 | 0
Other | 0 | 0
Total assets at fair value | 0 | 0
Liabilities |  |
Total liabilities at fair value | 0 | 0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Physical commodity contracts |  |
Assets |  |
Derivative assets | 0 | 0
Liabilities |  |
Derivative liabilities | 0 | 0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Financial commodity contracts |  |
Assets |  |
Derivative assets | 0 | 0
Liabilities |  |
Derivative liabilities | 0 | 0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Foreign currency contracts |  |
Assets |  |
Derivative assets | 0 | 0
Liabilities |  |
Derivative liabilities | 0 | 0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Interest rate contracts |  |
Liabilities |  |
Derivative liabilities | 0 | 0
Fair Value, Measurements, Nonrecurring |  |
Assets |  |
Total assets at fair value | 41,084 |
Liabilities |  |
Acquired wholesale energy contracts | 41,084 |
Fair Value, Measurements, Nonrecurring | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Assets |  |
Total assets at fair value | 0 |
Liabilities |  |
Acquired wholesale energy contracts | 0 |
Fair Value, Measurements, Nonrecurring | Significant Other Observable Inputs (Level 2) |  |
Assets |  |
Total assets at fair value | 41,084 |
Liabilities |  |
Acquired wholesale energy contracts | 41,084 |
Fair Value, Measurements, Nonrecurring | Significant Unobservable Inputs (Level 3) |  |
Assets |  |
Total assets at fair value | 0 |
Liabilities |  |
Acquired wholesale energy contracts | 0 |
Money market funds | Fair Value, Measurements, Recurring |  |
Assets |  |
Cash and cash equivalents | 112 | 34,072
Money market funds | Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Assets |  |
Cash and cash equivalents | 112 | 34,072
Money market funds | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) |  |
Assets |  |
Cash and cash equivalents | 0 | 0
Money market funds | Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) |  |
Assets |  |
Cash and cash equivalents | $ 0 | $ 0

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