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Stockholders' Equity (Convertible Preferred Stock) (Details) (USD $)
1 Months Ended 12 Months Ended
Oct. 31, 2012
Oct. 31, 2011
Oct. 31, 2010
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Class of Stock [Line Items]            
Prepaid mineral leases       $ 2,022,830 $ 1,577,544  
Dividend rate, percentage       7.50%    
Dividends in arrears, amount       2,200,000    
Dividend in arrears, per share       $ 0.05    
Percentage of preferred stock outstanding       25.00%    
Northern Comstock, LLC [Member]
           
Class of Stock [Line Items]            
Prepaid mineral leases       1,987,104 1,547,677  
7.5% Series A-1 Convertible Preferred Stock [Member]
           
Class of Stock [Line Items]            
Preferred stock, stated value per share       $ 1,000.0    
Conversion of convertible preferred stock, shares       1,536    
Conversion of preferred stock to common stock, per Share       $ 0.651    
Shares issued       862.5 862.5  
7.5% Series A-1 Convertible Preferred Stock [Member] | Northern Comstock, LLC [Member]
           
Class of Stock [Line Items]            
Shares issued 862.5 862.5 862.5      
Equity-based payment to non-employees       2,027,323 2,092,382 419,728
7.5% Series A-2 Convertible Preferred Stock [Member]
           
Class of Stock [Line Items]            
Preferred stock, stated value per share       $ 1,000.0    
Conversion of convertible preferred stock, shares       1,536    
Conversion of preferred stock to common stock, per Share       $ 0.651    
Minimum average common stock price for which Each shares of convertible preferred stock automatically converts into shares of common stock       $ 4.5    
Number of consecutive trading days for which each shares of convertible preferred stock automatically converts into shares of common stock       20 days    
Number of trading days for which Each shares of convertible preferred stock automatically converts into shares of common stock       30 days    
7.5% Series B Convertible Preferred Stock [Member]
           
Class of Stock [Line Items]            
Preferred stock, stated value per share       $ 1,000.0    
Conversion of convertible preferred stock, shares       606    
Conversion of preferred stock to common stock, per Share       $ 1.65    
Shares issued     35,749      
Proceeds from issuance of convertible preferred stock     35,750,000      
Net proceeds from issuance of convertible preferred stock     33,200,000      
Minimum average common stock price for which Each shares of convertible preferred stock automatically converts into shares of common stock       $ 4.5    
Number of consecutive trading days for which each shares of convertible preferred stock automatically converts into shares of common stock       20 days    
Number of trading days for which Each shares of convertible preferred stock automatically converts into shares of common stock       30 days