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Related Party Transactions (Details 1) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Income Earned From Companys Equity Method Investments By Entity [Abstract]        
Income earned from Company's equity method investees $ 5,096 $ 12,512 $ 9,379 $ 19,758
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 (215) 2,146 418 2,530
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 (655) 2,783 (1,012) 2,919
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 (1,540) 2,153 (3,487) 2,648
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 7,244 5,346 13,160 11,512
Other
       
Income Earned From Companys Equity Method Investments By Entity [Abstract]        
Income earned from Company's equity method investees $ 262 $ 84 $ 300 $ 149
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%.