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Discontinued Operations (Details Narrative) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2016
Dec. 31, 2015
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Feb. 29, 2016
Dec. 31, 2014
Dec. 31, 2013
Aggregate annual expenses         $ 3      
Impairment charge   $ 22,620        
Preferred shares authorized     100,000 100,000        
Common stock, par value     $ 0.01 $ 0.01        
Common stock shares     11,820,057 6,134,506        
Adjusted liquidation preference value     $ 2,527          
Series A Convertible Preferred Stock [Member]                
Preferred shares authorized     50,000     50,000    
Freeport-McMoRan Inc. [Member] | Series A Convertible Preferred Stock Purchase Agreement [Member]                
Convertible preferred stock     13.33          
Common stock, par value     $ 0.01          
Common stock shares     666,667          
Common stock issued upon conversion     793,000          
Adjusted liquidation preference value $ 2              
Cash consideration paid $ 2              
Freeport-McMoRan Inc. [Member] | Series A Convertible Preferred Stock Purchase Agreement [Member] | Series A Convertible Preferred Stock [Member]                
Shares issued     50,000          
Description of transfer property     (i) MEM accepting the transfer of the Property and replacing the Company as the permittee and operator of the WTP, and (ii) the payment of $1 to the Company. The Series A Purchase Agreement contains customary representations and warranties on the part of the Company. As contemplated by the Acquisition Agreement and the Series A Purchase Agreement and as approved by the Company’s Board of Directors, the Company filed with the Secretary of State of the State of Wyoming Articles of Amendment containing a Certificate of Designations with respect to the Preferred Stock (the “Certificate of Designations”).          
Preferred shares authorized     50,000          
Percentage of dividend rate     12.25%          
Adjusted liquidation preference per share     $ 40          
Accrued quarterly dividend increases in each quarter     $ 2          
Freeport-McMoRan Inc. [Member] | Investor Rights Agreement [Member]                
Percentage of outstanding shares acquire     16.86%          
Mt. Emmons Molybdenum Mining Properties [Member]                
Market price             $ 11 $ 11
Mt. Emmons Molybdenum Mining Properties [Member] | Minimum [Member]                
Market price   $ 5     $ 5