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Mineral Properties (Details Narrative) (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Notes to Financial Statements      
SERC Initial Contribution for 10% Interest MHLLC     $ 300,000
DHI Initial Contribution for 90% Interest MHLLC     3,000,000
Augusta Debt Assumed by MHLLC     3,066,000
Solitario Interest MHLLC if Future Payments Not Made     0.49
DHI Interest in MHLLC if Solitario Future Payments Not Made     0.51
Loan from Solitario to DHI for Costs Subsequent to Completion of Feasibility at 8% 127,000    
DHI Repayment to Solitario 131,000    
DHI Distribution to Members 2,500,000    
Solitario Portion DHI Distribution 2,000,000    
Received from DHI to Repay Portion of Prior Loan 500,000    
Accrued Interest from DHI Forgiven 35,000    
Accrued Interest from DHI 17,000    
Net Interest from DHI Recorded 18,000    
Buy Down Production Royalty Payment to Centennial Minerals Due on Date of Commencement of Commercial Production 5,000,000    
Payment Obligation to Centennial Minerals Prior to Modification of Agreement 3,500,000    
Additional Payment Obligation to Centennial Minerals Prior to Modification of Agreement 1,500,000    
MHLLC Capitalized Costs 3,129,000    
Portion of MHLLC Capitalized Costs Attributed to Lease Payments 325,000    
Capitalized Advance Royalty Payments 300,000    
Mineral Property Write Downs $ 31,000 $ 10,000