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Investments (Tables)
 3 Months Ended
Apr. 30, 2015
Investments And Deposits [Abstract]  
Equity Method Investments [Table Text Block] The following table summarizes equity method investments at April 30, 2015 and January 31, 2015 (amounts in thousands):

Entity   Ownership
Percentage		     Carrying Amount
April 30, 2015		     Carrying Amount
January 31, 2015		  
                   
Big River     10 %   $ 41,195     $ 40,188  
Patriot     27 %     37,005       40,201  
Total Equity Method Investments           $ 78,200     $ 80,389  
Schedule Of Income Loss Recognized From Equity Method Investments [Table Text Block] The following table summarizes income recognized from equity method investments for the periods presented (amounts in thousands):

    Three Months Ended
April 30,		  
    2015     2014  
             
Big River   $ 1,007     $ 5,059  
Patriot     473       3,238  
Total   $ 1,480     $ 8,297  
Schedule of Financial Information for Equity Method Investments [Table Text Block] Summarized financial information for each of the Company’s equity method investees is presented in the following table for the periods presented (amounts in thousands):

    Three Months Ended
April 30, 2015		     Three Months Ended
April 30, 2014		  
             
    Patriot     Big River     Patriot     Big River  
                         
Net sales and revenue   $ 63,239     $ 184,806     $ 80,409     $ 280,423  
Gross profit     3,818       10,805       13,785       83,833  
Income from continuing operations     1,779       10,377       12,195       52,121  
Net income     1,779       10,377       12,195       52,121