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CONSOLIDATED BALANCE SHEETS (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Current assets:    
Cash and cash equivalents $ 17,873 $ 39,838
Restricted cash (Note 5) 134 0
Marketable securities (Note 4) 986 1,703
Other current assets 1,177 1,084
Total current assets 20,170 42,625
Non-current assets:    
Mineral properties (Note 5) 16,517 16,622
Plant and equipment (Note 6) 19,232 18,809
Amayapampa interest (Note 3) 4,813 4,813
Long-term investments (Note 7) 119,871 0
Deferred debt issuance costs 0 103
Total non-current assets 160,433 40,347
Total assets 180,603 82,972
Current liabilities:    
Convertible notes (Note 8) 0 23,000
Accounts payable 757 147
Accrued interest payable 0 109
Accrued liabilities and other 2,466 1,374
Total current liabilities 3,223 24,630
Non-current liabilities:    
Other long-term liabilities 635 0
Deferred tax liability, net (Note 18) 35,522 0
Total non-current liabilities 36,157 0
Total liabilities 39,380 24,630
Shareholders' equity:    
Capital stock, no par value - unlimited shares authorized; shares outstanding: 2011 - 71,503,883 and 2010 - 61,919,752 (Note 9) 380,119 349,719
Stock-based compensation (Note 11) 5,065 4,695
Warrants (Note 10) 10,876 10,721
Additional paid-in capital (Note 12) 8,729 7,565
Accumulated other comprehensive income (Note 13) 175 929
Accumulated deficit during exploration stage (263,741) (315,287)
Total shareholders' equity 141,223 58,342
Total liabilities and shareholders' equity $ 180,603 $ 82,972