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Related Party Transactions (Details Textual) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2017
Mar. 31, 2017
Jun. 30, 2016
Mar. 31, 2016
Jun. 30, 2017
Jun. 30, 2016
Jan. 01, 2017
Dec. 31, 2016
Related Party Transaction [Line Items]                
Total distributions received from unconsolidated affiliates         $ 0.6 $ 2.7    
Percentage of shares acquired from subsidiary (percentage)            
Revenues recognized for the sale of ethanol   $ 161.3   $ 111.3 $ 284.5 198.9    
Revenues recognized for the sale of corn $ 125.5   $ 105.6   243.0 224.1    
Related party, Gross asset 0.6   5.2   0.6 5.2   $ 4.1
Related party, Gross liability $ 0.7   $ 1.0   $ 0.7 $ 1.0   $ 0.1
TAEI                
Related Party Transaction [Line Items]                
Percentage of company ownership interest (percentage)             66.00%  
TAME                
Related Party Transaction [Line Items]                
Percentage of company ownership interest (percentage) 33.00%       33.00%   50.00%  
Noncontrolling interest is attributed of all gains and losses of parent (percentage) 33.00%       33.00%