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Interim Financial Statements (Details) (USD $)
0 Months Ended 1 Months Ended 3 Months Ended 9 Months Ended
May 14, 2014
May 31, 2014
Sep. 30, 2014
oz
Sep. 30, 2013
Sep. 30, 2014
oz
Sep. 30, 2013
Dec. 31, 2013
Dec. 31, 2012
Oct. 09, 2014
Revolving Credit Facility [Member]
Subsequent Event [Member]
Line of Credit Facility [Line Items]                  
Revolving credit facility, borrowing capacity                 $ 5,000,000
Ounces of gold sold during the period     4,997   14,267        
Gold revenue     6,513,348 6,607,132 18,098,395 17,086,569      
Ounces of silver sold during the period     61,001   158,731        
Silver sales     1,200,000   3,100,000        
Accumulated deficit     (187,232,660)   (187,232,660)   (178,970,335)    
Net loss     (1,048,758) (4,518,260) (8,262,325) (15,805,617)      
Net cash used in operating activities         (2,594,280) (11,589,062)      
Cash and cash equivalents     9,262,254 5,860,193 9,262,254 5,860,193 2,409,446 5,973,079  
Proceeds from issuance of common stock, gross 11,900,000                
Proceeds from issuance of common stock, net of expenses   $ 11,000,000     $ 10,993,283 $ 18,750,001      
Shares underwritten in public offering (in shares)   7,475,000              
Price of shares underwritten (in usd per share) $ 1.59