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           Asset Retirement and Reclamation Obligations (Tables) 
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        6 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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           Jun. 30, 2014 
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| Asset Retirement Obligation Disclosure [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Asset Retirement Obligations | 
 
 The restricted cash as discussed in note 8 is related to the surety bonds and letters of credit which provide security to the related governmental agencies on these obligations.  
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- Details 
          
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- Definition 
          Tabular disclosure of the carrying amount of a liability for asset retirement obligations. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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