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Mineral Properties (Details Narrative) (USD $)
 6 Months Ended 12 Months Ended
Jun. 30, 2012
Dec. 31, 2013
Dec. 31, 2012
Dec. 21, 2010
Jan. 15, 2013
Notes to Financial Statements          
Fair value DHI contribution to Mt. Hamilton for 90% interest       $ 3,000,000  
Fair value Augusta debt       3,066,000  
Remaining cash payment to DHI   250,000      
Remaining stock payment to DHI   50,000      
Advance royalty payments due   300,000      
Royalty reduction payment due   500,000      
Loaned to DHI for completion of Feasibility Study     127,000    
DHI loan repaid     131,000    
MHLLC distribution to members   250,000 2,500,000    
Solitario portion of MHLLC distribution   200,000 2,000,000    
Repayment received from DHI     500,000    
Accrued interest due and forgiven     35,000    
Accrued interest included in decrease to interest income     17,000    
Total decrease to interest income     18,000    
Sale of 2.4% net smelter royalty to Sandstorm 10,000,000        
Initial payment from Sandstorm for royalty 6,000,000        
Balance of royalty payment from Sandstorm         4,000,000
Reduction in mineral property for Sandstorm royalty     3,000,000    
Deferred gain recorded as long-term liability on Sandstorm royalty     7,000,000    
Option to repurchase royalty for a period of 30 months     12,000,000    
Upfront deposit for gold stream agreement with Sandstorm     30,000,000    
Shares issued to underlying leaseholders   35,000      
Fair value of shares issued to underlying leaseholders   41,000      
Amount capitalized for royalty payments to underlying leaseholder   300,000      
Joint venture property payment revenue received for Bongara project in excess of capitalized costs   200,000 200,000    
Joint venture property revenue Mercurio project   100,000 100,000    
Mineral property write-downs in Peru   $ 13,000 $ 31,000