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Preferred Stock (Details Narrative) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Feb. 12, 2016
Dec. 31, 2020
Dec. 31, 2019
Preferred shares authorized   100,000 100,000
Series a convertible preferred stock, par value   $ 0.01 $ 0.01
Series a convertible preferred stock, shares outstanding   0 50,000
Redemption of series a preferred stock   $ (2,000)
Preferred stock, redemption price per share   $ 3.68  
Preferred stock, redemption amount   $ 3,200  
Preferred stock, liquidation preference, value   3,600  
Number of shares issued, value   (1)  
Liquidation preference   $ 0 $ 3,228
Acquisition percentage description   Concurrent with entry into the Acquisition Agreement and the Series A Purchase Agreement, the Company and MEM entered into an Investor Rights Agreement, which provided MEM rights to certain information and Board observer rights, which was terminated on December 31, 2020. MEM had agreed that it, along with its affiliates, would not acquire more than 16.86% of the Company's issued and outstanding shares of common stock.  
Common Stock [Member]      
Issuance of shares for redemption of series a preferred stock   328,000  
Number of stock shares issued   (327)  
Number of shares issued, value    
Series P Preferred Stock [Member]      
Preferred shares authorized   50,000  
Series A Convertible Preferred Stock [Member]      
Liquidation preference per share $ 40    
Liquidation preference $ 2,000    
Preferred stock, dividend rate 12.25%    
Number of shares converted 1.33    
Preferred stock issued upon conversion 66,667    
Number of common stock issued upon conversion     79,334
Series A Convertible Preferred Stock [Member] | Mt. Emmons Mining Company [Member]      
Number of stock shares issued 50,000    
Number of shares issued, value $ 2,000