Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies. (Details)

v3.21.1
Commitments and Contingencies. (Details)
3 Months Ended
Mar. 31, 2021
USD ($)
Commitments and Contingencies. (Details) [Line Items]  
Indexed price purchase contracts gallons 102,526,000
Open fixed-price sales contracts valued $ 18,170,000
Ethanol Sales Contracts [Member]  
Commitments and Contingencies. (Details) [Line Items]  
Open fixed-price sales contracts valued 207,687,000
Co-products Sales Contracts [Member]  
Commitments and Contingencies. (Details) [Line Items]  
open indexed-price sales contracts tons $ 146,000
Ethanol Purchase Contracts [Member] | Suppliers [Member]  
Commitments and Contingencies. (Details) [Line Items]  
Indexed price purchase contracts gallons 15,626,000
Ethanol Purchase Contracts [Member] | Fuel-grade from suppliers [Member]  
Commitments and Contingencies. (Details) [Line Items]  
Fixed-price purchase contracts value $ 1,238,000
Ethanol Purchase Contracts [Member] | Corn from suppliers [Member]  
Commitments and Contingencies. (Details) [Line Items]  
Fixed-price purchase contracts value $ 33,883,000