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Marketable Equity Securities (Details Narrative) (USD $)
In Thousands, except Share data, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Mar. 25, 2015
Dec. 31, 2014
Nov. 22, 2013
Marketable Securities [Abstract]        
Value of Kinross shares at $2.46 per share   $ 1,180us-gaap_AvailableForSaleSecuritiesAndHeldToMaturitySecurities    
Amount for subscription of 13,517,354 shares Ely stock       1,300XPL_AvailableForSaleElyGold
Proceeds from sale of shares of 6,303,563 shares of Ely common stock 481us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities      
Loss recorded for sale of Ely common stock 166us-gaap_MarketableSecuritiesRealizedGainLoss      
Fair value of shares of Ely common stock     946us-gaap_AvailableForSaleSecuritiesEquitySecurities  
Total amount of Ely common stock, representing 19.5% of outstanding shares of Ely Gold     15,732,274XPL_AvailableforsaleSecuritiesAtEndOfPeriod  
Fair value of Ely common shares     $ 1,324XPL_AvailableforsaleSecuritiesFairValueEndOfPeriod