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NET INCOME PER SHARE FROM CONTINUING OPERATIONS (Tables)
12 Months Ended
Jan. 31, 2013
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] The following table reconciles the basic and diluted net income per share from continuing operations computations for each year presented for fiscal years 2011 and 2010 (amounts in thousands, except per-share amounts):
    2011  
                   
    Income     Shares     Per Share  
Basic net income per share from continuing operations attributable to REX common shareholders   $ 26,629       9,117     $ 2.92  
Effect of stock options             70          
Diluted net income per share from continuing operations attributable to REX common shareholders   $ 26,629       9,187     $ 2.90  
    2010  
                   
    Income     Shares     Per Share  
Basic net income per share from continuing operations attributable to REX common shareholders   $ 18,614       9,651     $ 1.93  
Effect of stock options             174          
Diluted net income per share from continuing operations attributable to REX common shareholders   $ 18,614       9,825     $ 1.89