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
	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