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Note 4 - Discontinued Operations (Tables)
3 Months Ended
Feb. 28, 2019
Notes Tables  
Disposal Groups, Including Discontinued Operations [Table Text Block]
    Three months ended February 28,
    2019   2018
Net loss from discontinued operations, net of tax:        
Equity loss – Galore Creek   $
—  
    $
253
 
                 
Net loss from discontinued operations, net of tax:                
Funding of Galore Creek   $
—  
    $
643