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Note 13 - Acquisition of Aurizon Mines Ltd. (Details) - Unaudited Proforma Financial Information (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 9 Months Ended
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Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012
Unaudited Proforma Financial Information [Abstract] |  |  |  |
Sales of products | $ 106,629 | $ 131,903 | $ 344,575 | $ 406,963
Net income (loss) | (8,458) | (3,348) | (6,631) | 18,661
Income (loss) applicable to common shareholders | $ (8,596) | $ (3,486) | $ (7,045) | $ 18,247
Basic and diluted income (loss) per common share (in Dollars per share) | $ (0.03) | $ (0.01) | $ (0.02) | $ 0.05

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