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Note 8 - General and Administrative Expenses (Tables)
 3 Months Ended
Feb. 28, 2018
Notes Tables  
General and Administrative Expenses [Table Text Block]
    Three months ended  
    February 28,
2018		   February 28,
2017		  
Share-based compensation   $
1,949
     $
3,925
    
Salaries and benefits    
1,679
      
1,719
    
Office expense    
566
      
545
    
Professional fees    
199
      
303
    
Corporate communications and regulatory    
286
      
229
    
Depreciation    
6
      
10
    
    $
4,685
     $
6,731