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FAIR VALUE - HIERARCHY (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands | Sep. 30, 2020 | Sep. 30, 2019
--- | --- | ---
Assets |  |
Other | $ 1,840 | $ 1,706
Total assets at fair value | 140,790 | 34,235
Liabilities |  |
Total liabilities at fair value | 47,217 | 76,444
Money market funds |  |
Assets |  |
Derivative assets | 112,291 |
Physical commodity contracts |  |
Assets |  |
Derivative assets | 7,796 | 8,624
Liabilities |  |
Derivative liabilities | 32,517 | 40,426
Financial commodity contracts |  |
Assets |  |
Derivative assets | 18,779 | 23,904
Liabilities |  |
Derivative liabilities | 14,593 | 35,732
Foreign currency contracts |  |
Assets |  |
Derivative assets | 84 | 1
Liabilities |  |
Derivative liabilities | 107 | 286
Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Assets |  |
Other | 1,840 | 1,706
Total assets at fair value | 132,410 | 21,734
Liabilities |  |
Total liabilities at fair value | 14,593 | 35,732
Quoted Prices in Active Markets for Identical Assets (Level 1) | Money market funds |  |
Assets |  |
Derivative assets | 112,291 |
Quoted Prices in Active Markets for Identical Assets (Level 1) | Physical commodity contracts |  |
Assets |  |
Derivative assets | 0 | 0
Liabilities |  |
Derivative liabilities | 0 | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Financial commodity contracts |  |
Assets |  |
Derivative assets | 18,279 | 20,028
Liabilities |  |
Derivative liabilities | 14,593 | 35,732
Quoted Prices in Active Markets for Identical Assets (Level 1) | Foreign currency contracts |  |
Assets |  |
Derivative assets | 0 | 0
Liabilities |  |
Derivative liabilities | 0 | 0
Significant Other Observable Inputs (Level 2) |  |
Assets |  |
Other | 0 | 0
Total assets at fair value | 8,380 | 12,501
Liabilities |  |
Total liabilities at fair value | 32,624 | 40,712
Significant Other Observable Inputs (Level 2) | Money market funds |  |
Assets |  |
Derivative assets | 0 |
Significant Other Observable Inputs (Level 2) | Physical commodity contracts |  |
Assets |  |
Derivative assets | 7,796 | 8,624
Liabilities |  |
Derivative liabilities | 32,517 | 40,426
Significant Other Observable Inputs (Level 2) | Financial commodity contracts |  |
Assets |  |
Derivative assets | 500 | 3,876
Liabilities |  |
Derivative liabilities | 0 | 0
Significant Other Observable Inputs (Level 2) | Foreign currency contracts |  |
Assets |  |
Derivative assets | 84 | 1
Liabilities |  |
Derivative liabilities | 107 | 286
Significant Unobservable Inputs (Level 3) |  |
Assets |  |
Other | 0 | 0
Total assets at fair value | 0 | 0
Liabilities |  |
Total liabilities at fair value | 0 | 0
Significant Unobservable Inputs (Level 3) | Money market funds |  |
Assets |  |
Derivative assets | 0 |
Significant Unobservable Inputs (Level 3) | Physical commodity contracts |  |
Assets |  |
Derivative assets | 0 | 0
Liabilities |  |
Derivative liabilities | 0 | 0
Significant Unobservable Inputs (Level 3) | Financial commodity contracts |  |
Assets |  |
Derivative assets | 0 | 0
Liabilities |  |
Derivative liabilities | 0 | 0
Significant Unobservable Inputs (Level 3) | Foreign currency contracts |  |
Assets |  |
Derivative assets | 0 | 0
Liabilities |  |
Derivative liabilities | $ 0 | $ 0

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