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Note 2 - Summary of Significant Accounting Policies (Details) (USD $)
 1 Months Ended 12 Months Ended
Nov. 20, 2013
Nov. 30, 2013
Jul. 31, 2012
May 31, 2012
Jul. 31, 2011
Apr. 30, 2011
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]                    
Retained Earnings (Accumulated Deficit)             $ (238,870,000) $ (183,587,000)    
Proceeds from Issuance of Common Stock 56,300,000 57,800,000         57,802,000 50,491,000    
Convertible Debt Issuable In Connection With Private Placement1           4,500,000        
Proceeds from Convertible Debt       3,000,000   1,300,000   3,000,000 1,312,000  
Proceeds From Sale Of Units Of Common Stock And Warrants Net         22,800,000          
Proceeds from Issuance of Private Placement     50,500,000              
Cash and Cash Equivalents, at Carrying Value             72,287,000 53,506,000 17,974,000 2,109,000
Other Comprehensive Income (Loss), Net of Tax             $ (55,300,000) $ (23,300,000) $ (11,800,000)  
Machinery and Equipment [Member] | Minimum [Member]
                    
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]                    
Property, Plant and Equipment, Estimated Useful Lives             three      
Machinery and Equipment [Member] | Maximum [Member]
                    
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]                    
Property, Plant and Equipment, Estimated Useful Lives             five      
Furniture and Fixtures [Member]
                    
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]                    
Property, Plant and Equipment, Estimated Useful Lives             five