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Schedule of Effective Income Tax Rate Reconciliation (Details) (USD $)
3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended 154 Months Ended 157 Months Ended 160 Months Ended 163 Months Ended
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Jun. 30, 2012
Sep. 30, 2012
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Mar. 31, 2012
Jun. 30, 2012
Sep. 30, 2012
Dec. 31, 2012
Net loss before taxes $ (5,734,376) $ (8,577,977) $ (7,834,940) $ (16,412,917) $ (22,147,293) $ (29,347,337) $ (25,444,056) $ (15,239,402) $ (119,963,684) $ (128,541,660) $ (134,276,036) $ (141,476,080)
Statutory rate           35.00% 35.00% 35.00%        
Computed expected tax (recovery)           (10,271,568) (8,905,420) (5,333,791)        
Stock-based compensation           449,384 (155,826) 1,311,158        
Depreciation           (16,230) 0 0        
Joint venture chargeback           106,713 86,917 75,154        
Miscellaneous           3,106,194 (2,455,577) (511,202)       3,106,194
Increase (decrease) in valuation allowance:                        
Net operating loss           2,173,138 5,472,168 2,127,013        
Exploration and mineral property costs           4,029,946 5,957,738 2,331,668        
Capital assets           422,423 0 0        
Reported income taxes           $ 0 $ 0 $ 0