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Related Party Transactions (Details 1) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Income Earned From Companys Equity Method Investments By Entity [Abstract]        
Income earned from Company's equity method investees $ 6,027 $ 9,731 $ 15,406 $ 29,489
Reduction in ownership percentage (percentage)     2.00%  
The Andersons Albion Ethanol LLC
       
Income Earned From Companys Equity Method Investments By Entity [Abstract]        
Percentage of company ownership interest (percentage) 50.00%   50.00%  
Income earned from Company's equity method investees (622) 1,190 (204) 3,720
The Andersons Clymers Ethanol LLC
       
Income Earned From Companys Equity Method Investments By Entity [Abstract]        
Percentage of company ownership interest (percentage) 38.00%   38.00%  
Income earned from Company's equity method investees (972) 211 (1,985) 3,130
The Andersons Marathon Ethanol LLC
       
Income Earned From Companys Equity Method Investments By Entity [Abstract]        
Percentage of company ownership interest (percentage) 50.00%   50.00%  
Income earned from Company's equity method investees (1,629) 1,868 (5,116) 4,516
Lansing Trade Group LLC
       
Income Earned From Companys Equity Method Investments By Entity [Abstract]        
Percentage of company ownership interest (percentage) 51.00% [1]   51.00% [1]  
Income earned from Company's equity method investees 9,187 6,518 22,347 18,030
Other
       
Income Earned From Companys Equity Method Investments By Entity [Abstract]        
Income earned from Company's equity method investees $ 63 $ (56) $ 364 $ 93
Minimum | Other
       
Income Earned From Companys Equity Method Investments By Entity [Abstract]        
Percentage of company ownership interest (percentage) 7.00%   7.00%  
Maximum | Other
       
Income Earned From Companys Equity Method Investments By Entity [Abstract]        
Percentage of company ownership interest (percentage) 33.00%   33.00%  
[1] This does not consider restricted management units which once vested will reduce the ownership percentage by approximately 2%.