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Plant And Equipment (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended 141 Months Ended
Sep. 30, 2013
Sep. 30, 2013
Sep. 30, 2013
Dec. 31, 2012
Property, Plant and Equipment [Line Items]        
Cost $ 7,800 $ 7,800 $ 7,800 $ 5,510
Accumulated depreciation and write downs 2,710 2,710 2,710 1,918
Net 5,090 5,090 5,090 3,592
Impairment of Long-Lived Assets to be Disposed of 3,500 3,500 10,617  
Assets held for sale (mill equipment) 6,500 6,500 6,500 10,000
Cost of Assets Held for Sale 10,000 10,000 10,000 10,000
Writedowns of Assets Held For Sale 3,500 3,500 3,500  
Gross Sale Price of Assets Held For Sale 7,300 7,300 7,300  
Commissions and Costs to Sell of Assets Held For Sale 800 800 800  
Awak Mas, Indonesia [Member]
        
Property, Plant and Equipment [Line Items]        
Cost 242 242 242 242
Accumulated depreciation and write downs 242 242 242 242
Mt. Todd, Australia [Member]
        
Property, Plant and Equipment [Line Items]        
Cost 5,500 5,500 5,500 3,497
Accumulated depreciation and write downs 1,789 1,789 1,789 1,124
Net 3,711 3,711 3,711 2,373
Los Cardones, Mexico [Member]
        
Property, Plant and Equipment [Line Items]        
Cost 1,219 1,219 1,219 1,194
Accumulated depreciation and write downs 125 125 125 109
Net 1,094 1,094 1,094 1,085
Guadalupe de los Reyes, Mexico [Member]
        
Property, Plant and Equipment [Line Items]        
Cost 21 21 21 21
Accumulated depreciation and write downs 5 5 5 3
Net 16 16 16 18
Corporate, United States [Member]
        
Property, Plant and Equipment [Line Items]        
Cost 818 818 818 556
Accumulated depreciation and write downs 549 549 549 440
Net $ 269 $ 269 $ 269 $ 116