XML 65 R54.htm IDEA: XBRL DOCUMENT v3.10.0.1
Reclamation and Remediation (Details) - USD ($)
$ in Thousands
 6 Months Ended 12 Months Ended
Jun. 30, 2018
Dec. 31, 2017
Asset Retirement Obligation, Roll Forward Analysis    
Reclamation liabilities – balance at beginning of period $ 2,005 $ 1,907
Changes in estimate   10
Foreign currency exchange loss (15) 88
Reclamation liabilities – balance at end of period 1,990 2,005
Asset retirement obligation – balance at beginning of period 941 518
Changes in estimate   366
Accretion expense 40 35
Foreign currency exchange loss (10) 22
Asset retirement obligation – balance at end of period 971 941
Total period end balance $ 2,961 $ 2,946
Reclamation and remediation discount rate 8.00% 8.00%
Reclamation bond $ 9,200