Quarterly report pursuant to Section 13 or 15(d)

SEGMENT DISCLOSURES (Tables)

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SEGMENT DISCLOSURES (Tables)
3 Months Ended
Feb. 28, 2017
Feb. 29, 2016
Schedule of Segment Reporting Information, by Segment [Table Text Block]
      2017     2016  
  Sales $ 47,021   $ 46,178  
  Elimination of intersegment revenue   (4,588 )   (15,675 )
               
  Consolidated sales $ 42,433     30,503  
 
Sales [Member]    
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]
      Quarter ended February 28, 2017                  
                     
      SDI     SDI Canada     Total  
  Sales $ 39,265   $ 7,756   $ 47,021  
      Quarter ended February 29, 2016                  
                     
      SDI     SDI Canada     Total  
  Sales $ 26,933   $ 19,245   $ 46,178  
Assets [Member]    
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]
      Quarter ended February 28, 2017                  
                     
      SDI     SDI Canada     Total  
  Assets $ 1,208,491   $ 128,329   $ 1,336,820  
      Quarter ended February 29, 2016                  
                     
      SDI     SDI Canada     Total  
  Assets $ 1,453,711   $ 254,777   $ 1,708,488