XML 52 R29.htm IDEA: XBRL DOCUMENT v3.19.1
7. Asset Retirement Obligation and Accrued Reclamation Costs (Tables)
12 Months Ended
Dec. 31, 2018
Asset Retirement Obligation Disclosure [Abstract]  
Schedule of Asset Retirement Obligations
Asset Retirement Obligation      
   Balance December 31, 2016   $ 158,282  
   Accretion during 2017     5,790  
   Balance December 31, 2017     164,072  
   Accretion during 2018     6,148  
   Balance December 31, 2018   $ 170,220