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BUSINESS COMBINATIONS (Tables)
 12 Months Ended
Jan. 31, 2014
Business Combinations [Abstract]  
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Based on the indicated fair values of consideration transferred, assets acquired and liabilities assumed, the Company calculated a gain on bargain purchase as follows (amounts in thousands):

Consideration transferred:        
Cash   $ 10,413  
Fair value of non-controlling interest     955  
Fair value of 48% equity method investment     18,642  
    $ 30,010  
Net assets acquired:        
Cash   $ 24,971  
Accounts receivable     7,381  
Inventory     8,491  
Prepaid expenses and other current assets     711  
Other assets     2,995  
Property, plant and equipment     78,618  
Current liabilities     (19,167 )
Long-term debt     (65,000 )
    $ 39,000  
Bargain purchase gain   $ 8,990  
Business Acquisition, Pro Forma Information [Table Text Block] The unaudited financial information in the table below summarizes the combined results of operations of the Company and NuGen, on a pro forma basis, as though the companies had been combined as of the beginning of fiscal year 2011 (in thousands, except per share amounts):

    Year Ended
January 31, 2012 		 
       
Net sales and revenue   $ 684,615  
Net income   $ 34,939  
Basic net income per share   $ 3.83  
Diluted net income per share   $ 3.80