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Note 5 - Income Taxes (Details) - Components of the Net Deferred Tax Asset (USD $) In Thousands, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
--- | --- | --- | --- | ---
Deferred tax assets: |  |  |  |
Accrued reclamation costs | $ 39,262 | $ 45,653 |  |
Deferred exploration | 35,267 | 32,396 |  |
Foreign net operating losses | 27,923 | 20,247 |  |
Domestic net operating losses | 54,181 | 44,814 |  |
AMT credit carryforwards | 22,155 | 24,603 |  |
Pension and benefit obligation | 10,354 | 12,488 |  |
Miscellaneous | 31,077 | 17,437 |  |
Total deferred tax assets | 220,219 | 197,638 |  |
Valuation allowance | (27,155) | (23,030) | (22,895) | (19,073)
Total deferred tax assets | 193,064 | 174,608 |  |
Deferred tax liabilities: |  |  |  |
Miscellaneous | (5,966) | (1,262) |  |
Properties, plants and equipment | (238,497) | (57,583) |  |
Total deferred tax liabilities | (244,463) | (58,845) |  |
Net deferred tax asset (liability) | $ (51,399) | $ 115,763 |  |

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