Note 16 - Acquisitions (Details)	1 Months Ended		7 Months Ended		9 Months Ended	12 Months Ended							7 Months Ended
	Apr. 30, 2013 USD ($)	Feb. 21, 2008 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2013 CAD	Sep. 30, 2013 USD ($)	Dec. 31, 2011	Feb. 14, 2014 USD ($)	May 31, 2013 USD ($)	May 31, 2013 CAD	Apr. 30, 2013 Asset Retirement Obligation [Member] USD ($)	Apr. 30, 2013 Plant and Equipment [Member] USD ($)	Apr. 30, 2013 Development and Other Mineral Interests [Member] USD ($)	Dec. 31, 2013 In The Money Stock Options [Member]	Dec. 31, 2013 Aurizon Mines Ltd [Member]	Dec. 31, 2013 Aurizon Mines Ltd [Member] CAD	May 31, 2013 Aurizon Mines Ltd [Member] USD ($)	May 31, 2013 Aurizon Mines Ltd [Member] CAD
Note 16 - Acquisitions (Details) [Line Items]
Business Acquisition Per Share Consideration (in Dollars per share)					$ 3.83											$ 4.32	4.47
Business Acquisition, Share Price (in Dollars per share)																	4.75
Business Acquisition Per Share Issued (in Shares)														0.9953	0.9953
Potentail Business Acquisition Per Share Price (in Dollars per share)															3.11
Business Acquisition Cost Sensitivity To Change In Share Price (in Dollars per share)			$ 3.00
Potentail Business Acquitision Shares Issued (in Shares)			0.3442	0.3442
Business Acquisition Shares Outstanding of Entity Acquired (in Shares)			164,838,377	164,838,377
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in Shares)			56,997,790	56,997,790									747,132
Business Acquisition Shares Issued And Outstanding of Acquired Entity (in Shares)			165,585,509	165,585,509
Payments to Acquire Businesses, Gross (in Dollars)			$ 496,200,000	514,500,000	$ 496,211,000
Payments to Acquire Businesses, Gross			496,200,000	514,500,000	496,211,000
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable (in Dollars)			218,300,000	226,300,000	218,302,000
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable			218,300,000	226,300,000	218,302,000
Business Combination, Consideration Transferred (in Dollars)				740,800,000	714,513,000
Exchange Rate			0.9645	0.9645
Share Price (in Dollars per share)			$ 3.08				$ 3.47	$ 3.83	3.97
Proceeds from Notes Payable	490,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	715,400,000				715,391,000					11,100,000	127,800,000	576,500,000
Business Acquisition, Percentage of Voting Interests Acquired						30.00%
Stock Issued During Period, Shares, Acquisitions (in Shares)		5,395,683			56,997,790
Stock Issued During Period, Value, Acquisitions		$ 33,800,000
Business Acquisition, Percentage Common Shares Based on Volume Weighted Average Price						90.00%
Business Acquisition, Number of Trading Days						20 days