Commitments (Notes)	12 Months Ended
Sep. 30, 2019
Commitments Disclosure [Text Block]	Commitments The Company has entered into a steam contract with an unrelated party under which the vendor agreed to provide the steam required by the Company, up to 475,000 pounds per hour. The Company agreed to pay a net energy rate for all steam provided under the contract as well as a monthly demand charge. The net energy rate is set for the first three years then adjusted each year beginning on the third anniversary date. The steam contract was renewed effective January 1, 2013, and will remain in effect until November 30, 2024. Expenses under this agreement for the years ended September 30, 2019 and 2018 were $5.7 million and $4.2 million, respectively. The Company leases certain equipment, railcars, vehicles, and operating facilities under non-cancellable operating leases that expire on various dates through 2023. The future minimum lease payments required under these leases (net of sublease income) is $3.2 million, $3.1 million , $2.6 million and $1.2 million in 2020, 2021, 2022 and 2023, respectively. Rent expense (net of sublease income) related to operating leases for the years ended September 30, 2019 and 2018 was $4.0 million and $4.7 million, respectively. Non Related party sublease totals were $0.2 million for 2019 and $0.6 million in 2018. The majority of the future minimum lease payments are due to Bunge.

Commitments (Notes)

12 Months Ended

Sep. 30, 2019

Commitments

The Company has entered into a steam contract with an unrelated party under which the vendor agreed to provide the steam required by the Company, up to 475,000 pounds per hour. The Company agreed to pay a net energy rate for all steam provided under the contract as well as a monthly demand charge. The net energy rate is set for the first three years then adjusted each year beginning on the third anniversary date. The steam contract was renewed effective January 1, 2013, and will remain in effect until November 30, 2024. Expenses under this agreement for the years ended September 30, 2019 and 2018 were $5.7 million and $4.2 million, respectively.

The Company leases certain equipment, railcars, vehicles, and operating facilities under non-cancellable operating leases that expire on various dates through 2023. The future minimum lease payments required under these leases (net of sublease income) is $3.2 million, $3.1 million , $2.6 million and $1.2 million in 2020, 2021, 2022 and 2023, respectively. Rent expense (net of sublease income) related to operating leases for the years ended September 30, 2019 and 2018 was $4.0 million and $4.7 million, respectively. Non Related party sublease totals were $0.2 million for 2019 and $0.6 million in 2018. The majority of the future minimum lease payments are due to Bunge.