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Business and Significant Accounting Policies (Details Narrative) (USD $)
 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
May 05, 2014
Jan. 28, 2014
Dec. 31, 2013
Jun. 18, 2013
Jul. 21, 2010
Jun. 27, 2006
Accounting Policies [Abstract]                
Kinross shares owned 530,000              
Net proceeds from sale of 70,000 Kinross shares $ 350,000              
Gain on sale of 70,000 Kinross shares 300,000              
Borrowed in short term loans against holding of Kinross shares         802,000      
Value of 530,000 Kinross shares based on $4.13 per share price     2,190,000          
Anglo Platinum interest in PBM             0.51  
Solitario share of PBM loss 125,000 313,000            
Stock option expense 56,000 125,000            
Options available under 2006 Stock Option Incentive Plan               2,800,000
Awards at Cdn$2.40 voluntarily cancelled under 2006 Plan       1,797,000        
Proceeds from options exercised of 112,500 shares at Cdn$1.55   176,000            
Proceeds from options exercised of 5,000 shares at Cdn$1.49   $ 7,000            
Options available for award under 2013 Solitario Exploration and Royalty Corp. Omnibus Stock and Incentive Plan           1,750,000    
Restricted stock units granted from 2013 Plan 50,562              
Potentially dilutive shares related to options excluded from earnings per share 2,022,000 2,480,900            
Shares related to warrants excluded from earnings per share 1,624,748 1,624,748