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INCOME TAXES (Details 4) - USD ($)
Dec. 31, 2017
Dec. 31, 2016
Jan. 01, 2016
Dec. 31, 2015
Disclosure of other provisions [line items]        
Plant, equipment and mining properties $ 31,951,605 $ 27,738,747 $ 18,593,232 $ 18,593,232
Exploration and evaluation assets 43,337,870 30,791,736 29,896,658 29,896,658
Reclamation provision and other 11,638,157 6,962,911 4,369,486 $ 4,369,486
Unrecognized deductible temporary differences [Member]        
Disclosure of other provisions [line items]        
Tax losses carried forward 13,972,696 17,350,158 18,964,478  
Share issue costs 1,100,308 1,466,423 41,040  
Plant, equipment and mining properties 6,198,014 3,872,794 721,282  
Exploration and evaluation assets 1,330,085 1,257,512 10,530,316  
Investments 197,978 189,056 191,474  
Reclamation provision and other 10,053,737 5,602,790 369,329  
Unrecognized deductible temporary differences $ 32,852,818 $ 29,738,733 $ 30,817,919