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Note 5 - Investment in Galore Creek (Tables)
 3 Months Ended
Feb. 28, 2018
Galore Creek [Member]  
Notes Tables  
Equity Method Investments [Table Text Block]
    Three months ended  
    February 28,
2018		   February 28,
2017		  
Balance – beginning of period   $
251,461
     $
241,404
    
Share of losses                  
Mineral property expenditures    
(1
 )    
(11
 )  
Care and maintenance expense    
(252
 )    
(139
 )  
     
(253
 )    
(150
 )  
Funding    
643
      
230
    
Foreign currency translation    
1,544
      
2,690
    
Balance – end of period   $
253,395
     $
244,174
    
    At
February 28,
2018		   At
November 30,
2017		  
Current assets: Cash, prepaid expenses and other receivables   $
450
     $
197
    
Non-current assets: Mineral property    
227,958
      
226,561
    
Current liabilities: Accounts payable and accrued liabilities    
(109
 )    
(237
 )  
Non-current liabilities: Reclamation obligation    
(7,692
 )    
(7,645
 )  
Net assets   $
220,607
     $
218,876