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NET INCOME PER SHARE FROM CONTINUING OPERATIONS (Tables)
 12 Months Ended
Jan. 31, 2018
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] The following table reconciles the basic and diluted net income per share computations for fiscal year 2015 (amounts in thousands, except per-share amounts):

   2015 
             
   Income   Shares   Per Share 
             
Basic net income per share attributable to REX common shareholders  $31,436    7,297   $4.31 
Effect of restricted stock        10      
Diluted net income per share attributable to REX common shareholders  $31,436    7,307   $4.30