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Other Assets - Other Assets (Details) - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]    
Furniture and Fixtures, net of accumulated depreciation $ 33 $ 41
Vendetta Warrants 412
Exploration bonds and other assets 4 4
Total other assets $ 449 $ 45