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Investments (Tables)
 3 Months Ended
Apr. 30, 2016
Investments And Deposits [Abstract]  
Equity Method Investments [Table Text Block] The following table summarizes equity method investments at April 30, 2016 and January 31, 2016 (amounts in thousands):

Entity   Ownership
Percentage		     Carrying Amount
April 30, 2016		     Carrying Amount
January 31, 2016		  
                   
Big River     9.7 %   $ 38,940     $ 38,707  
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,		  
    2016     2015  
             
Big River   $ 233     $ 1,007  
Patriot (sold June 1, 2015)     —       473  
Total   $ 233     $ 1,480  
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, 2016		     Three Months Ended
April 30, 2015		  
    Patriot (1)     Big River     Patriot (1)     Big River  
                                 
Net sales and revenue   $ —     $ 183,571     $ 63,239     $ 184,806  
Gross profit   $ —     $ 5,870     $ 3,818     $ 10,805  
Income from continuing operations   $ —     $ 2,404     $ 1,779     $ 10,377  
Net income   $ —     $ 2,404     $ 1,779     $ 10,377  
                                 
(1) The Company’s equity interest in Patriot was sold June 1, 2015.