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Other Assets (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Other assets $ 136 $ 159
Furniture and Fixtures    
Other assets 38 39
Lik Project Equipment    
Other assets 45 50
Office Lease Asset    
Other assets 36 45
Vendetta Warrants    
Other assets 13 21
Exploration Bonds and Other Assets    
Other assets $ 4 $ 4