XML 65 R55.htm IDEA: XBRL DOCUMENT v3.10.0.1
COMMITMENTS AND CONTINGENCIES - Surety, Reclamation Bonds and Flow-Through Common Shares (Details)
$ in Thousands, $ in Millions
3 Months Ended 9 Months Ended 12 Months Ended
Dec. 19, 2017
USD ($)
Sep. 22, 2017
USD ($)
Aug. 25, 2017
USD ($)
Jul. 01, 2017
USD ($)
Jun. 23, 2017
USD ($)
Sep. 30, 2017
USD ($)
Sep. 30, 2018
CAD ($)
Sep. 30, 2018
USD ($)
Sep. 30, 2017
USD ($)
Dec. 31, 2017
CAD ($)
Dec. 31, 2017
USD ($)
Reclamation Bonds                      
Other assets               $ 6,881     $ 10,718
Amount raised or spent in connection with the equity issuance   $ 43,200       $ 39,397   39,400 $ 39,397    
Surety Bonds                      
Reclamation Bonds                      
Face amount         $ 20,000            
Percentage of annual fees on surety bonds         2.00%            
Percentage of upfront deposit on surety bonds         0.00%            
Surety bonds upfront deposit amount     $ 15,000                
Surety Bonds | Tonkin Project                      
Reclamation Bonds                      
Surety bond draw down       $ 3,600              
Surety Bonds | Nevada Exploration Properties                      
Reclamation Bonds                      
Surety bond draw down       $ 1,300              
Surety Bonds | Gold Bar project                      
Reclamation Bonds                      
Surety bond draw down     $ 15,000                
Reclamation Bonds                      
Reclamation Bonds                      
Reclamation bonding obligation               $ 19,900      
Black Fox                      
Reclamation Bonds                      
Percentage of upfront deposit on surety bonds             2.00% 2.00%      
Surety bonds upfront deposit amount               $ 0      
Surety bonding obligation             $ 20.6 15,900      
Outstanding surety bonds               20,000      
Timmins                      
Reclamation Bonds                      
Surety bonds upfront deposit amount               $ 100      
Flow Through Common Shares                      
Reclamation Bonds                      
Amount raised or spent in connection with the equity issuance $ 10,000                 $ 12.9 $ 10,000