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Other Assets (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Other assets $ 179 $ 110
Furniture and Fixtures    
Other assets 39 36
Lik Project Equipment    
Other assets 55 70
Exploration Bonds and Other Assets    
Other assets 4 4
Vendetta Warrants    
Other assets 27 0
Office Lease Asset    
Other assets $ 54 $ 0