XML 117 R86.htm IDEA: XBRL DOCUMENT v3.19.1
Other Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Miscellaneous non-current assets [abstract]    
Reclamation bonds $ 199 $ 199
Lease receivable 1,903 81
Other assets 61 66
Total other assets $ 2,163 $ 346