FAIR VALUE - HIERARCHY (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Sep. 30, 2022
Liabilities:
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Assets
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Liabilities and Equity
Fair Value, Measurements, Recurring
Assets:
Other	$ 2,651	$ 1,884
Total assets at fair value	36,773	32,963
Liabilities:
Total liabilities at fair value	30,820	64,039
Fair Value, Measurements, Recurring | Money market funds
Assets:
Assets	131	59
Fair Value, Measurements, Recurring | Physical commodity contracts
Assets:
Assets	7,287	10,485
Liabilities:
Liabilities	26,220	30,623
Fair Value, Measurements, Recurring | Financial commodity contracts
Assets:
Assets	26,704	20,517
Liabilities:
Liabilities	4,600	33,399
Fair Value, Measurements, Recurring | Foreign currency contracts
Assets:
Assets		18
Liabilities:
Liabilities		17
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets, (Level 1)
Assets:
Other	2,651	1,884
Total assets at fair value	29,486	22,460
Liabilities:
Total liabilities at fair value	4,600	33,231
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets, (Level 1) | Money market funds
Assets:
Assets	131	59
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets, (Level 1) | Physical commodity contracts
Assets:
Assets	0	0
Liabilities:
Liabilities	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets, (Level 1) | Financial commodity contracts
Assets:
Assets	26,704	20,517
Liabilities:
Liabilities	4,600	33,231
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets, (Level 1) | Foreign currency contracts
Assets:
Assets		0
Liabilities:
Liabilities		0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Assets:
Other	0	0
Total assets at fair value	7,287	10,503
Liabilities:
Total liabilities at fair value	26,220	30,808
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Money market funds
Assets:
Assets	0	0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Physical commodity contracts
Assets:
Assets	7,287	10,485
Liabilities:
Liabilities	26,220	30,623
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Financial commodity contracts
Assets:
Assets	0	0
Liabilities:
Liabilities	0	168
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Foreign currency contracts
Assets:
Assets		18
Liabilities:
Liabilities		17
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Assets:
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) | Money market funds
Assets:
Assets	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Physical commodity contracts
Assets:
Assets	0	0
Liabilities:
Liabilities	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Financial commodity contracts
Assets:
Assets	0	0
Liabilities:
Liabilities	$ 0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Foreign currency contracts
Assets:
Assets		0
Liabilities:
Liabilities		$ 0