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Related Party Transactions (Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Oct. 01, 2020
Sep. 01, 2019
Dec. 31, 2020
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2021
Related Party Transaction [Line Items]            
Noncontrolling interests     $ 129,812 $ 129,812   $ 151,519
Outstanding accounts payable     $ 140,058 140,058   146,063
Green Plains Cattle [Member]            
Related Party Transaction [Line Items]            
Reduction in selling, general and administrative expenses       1,200 $ 500  
Revenues and cost of goods sold subsequent to disposition       $ 8,200 $ 4,000  
Green Plains Cattle [Member] | Mr. Ejnar Knudsen [Member]            
Related Party Transaction [Line Items]            
Noncontrolling interests           $ 100
Green Plains Cattle [Member] | Mr. Ejnar Knudsen [Member] | Indirect Interest By Mr. Ejnar Knudsen [Member]            
Related Party Transaction [Line Items]            
Indirect ownership interest percentage           0.0736%
Green Plains Cattle Company LLC [Member]            
Related Party Transaction [Line Items]            
Percent membership interest sold 50.00% 50.00% 50.00%