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Note 10 - Other Income (Expense)
 6 Months Ended
May 31, 2017
Notes to Financial Statements  
Other Income and Other Expense Disclosure [Text Block]
NOTE
10
– OTHER INCOME (EXPENSE)
 
    Three months ended May 31,   Six months ended May 31,
    2017   2016   2017   2016
Interest income   $
307
     $
220
     $
554
     $
401
  
Interest expense    
(1,307
 )    
(1,153
 )    
(2,520
 )    
(2,244
 )
Foreign exchange gain (loss)    
194
      
(797
 )    
33
      
(272
 )
    $
(806
 )   $
(1,730
 )   $
(1,933
 )   $
(2,115
 )