Annual reports filed by certain Canadian issuers pursuant to Section 15(d) and Rule 15d-4

Mineral properties (Details Textual)

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Mineral properties (Details Textual)
12 Months Ended 105 Months Ended 12 Months Ended
Dec. 31, 2012
CAD
Dec. 31, 2011
CAD
Dec. 31, 2010
CAD
Dec. 31, 2012
CAD
Dec. 31, 2012
Nfu Wyoming Llc [Member]
Lost Creek Property [Member]
USD ($)
Dec. 31, 2012
Nfu Wyoming Llc [Member]
Lost Creek Property [Member]
CAD
Dec. 31, 2010
Kaycee Claims [Member]
Other Us Properties [Member]
CAD
Percentage of asset acquired         100.00% 100.00%  
Purchase price           24,515,832  
Purchased property interest         20,000,000    
Write-off of mineral properties 0 0 381,252 803,336     381,252