Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies. (Details)

v3.20.2
Commitments and Contingencies. (Details)
9 Months Ended
Sep. 30, 2020
USD ($)
Commitments and Contingencies. (Details) [Line Items]  
Open fixed-price sales contracts valued, tons $ 18,120,000
Ethanol Sales Contracts [Member]  
Commitments and Contingencies. (Details) [Line Items]  
Open ethanol indexed-price sales contracts, gallons 54,750,000
Open fixed-price sales contracts valued, tons $ 327,244,000
Co-products Sales Contracts [Member]  
Commitments and Contingencies. (Details) [Line Items]  
Open fixed-price sales contracts valued, tons $ 165,000
Ethanol Purchase Contracts [Member] | Suppliers [Member]  
Commitments and Contingencies. (Details) [Line Items]  
Indexed-price purchase contracts to purchase gallons 4,890,000
Ethanol Purchase Contracts [Member] | Fuel-grade from suppliers [Member]  
Commitments and Contingencies. (Details) [Line Items]  
Fixed-price purchase contracts value $ 3,341,000
Ethanol Purchase Contracts [Member] | Corn from suppliers [Member]  
Commitments and Contingencies. (Details) [Line Items]  
Fixed-price purchase contracts value $ 9,525,000