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Note 5 - Stockholders' Equity (Details) (USD $)
 3 Months Ended 1 Months Ended 3 Months Ended 1 Months Ended 0 Months Ended 3 Months Ended 1 Months Ended 3 Months Ended 28 Months Ended 15 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Jan. 13, 2014
Jan. 13, 2014
Scenario, Previously Reported [Member]
Jun. 30, 2011
Common Stock [Member]
Private Placement 2011 [Member]
Mar. 31, 2014
Common Stock [Member]
Private Placement 2011 [Member]
Jul. 31, 2012
Common Stock [Member]
Private Placement 2012 [Member]
Nov. 30, 2013
Common Stock [Member]
Jefferies LLC [Member]
Jan. 13, 2014
Common Stock [Member]
Mar. 31, 2014
Warrant [Member]
Private Placement 2011 [Member]
Jul. 29, 2011
Private Placement 2011 [Member]
Mar. 31, 2013
Private Placement 2011 [Member]
Sep. 30, 2013
Private Placement 2011 [Member]
Jun. 30, 2011
Private Placement 2011 [Member]
Sep. 30, 2013
Private Placement 2012 [Member]
Jul. 31, 2012
Private Placement 2012 [Member]
Note 5 - Stockholders' Equity (Details) [Line Items]                                
Stockholders' Equity Note, Stock Split, Conversion Ratio                 20              
Common Stock, Shares Authorized     75,000,000 1,500,000,000                        
Stock Issued During Period, Shares, New Issues         8,000,000 108,409 5,100,000 8,600,000                
Class of Warrant or Right, Number of Securities Called by Warrants or Rights         22,800,000                      
Payments of Stock Issuance Costs (in Dollars)         $ 1,200,000   $ 3,100,000 $ 3,900,000                
Shares Available Per Warrant Exercised         0.5                      
Exercise Price Arrangement, Warrants To Purchase Shares, Purchase Price Per Unit (in Dollars per Share)                           $ 3.60    
Limitation On Exercisable Warrants                         9.99%      
Effective Rate Of Liquidated Damages                     1.00%       1.50%  
Private Placement Capped Penatly                     6.00%       9.00%  
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Exercised                   144,040            
Proceeds from Issuance of Common Stock (in Dollars)           0   57,800,000                
Proceeds from Warrant Exercises (in Dollars)   600,000                   600,000        
Shares Issued, Price Per Share (in Dollars per share)                               $ 10.50
Stock Issued During Period, Value, New Issues (in Dollars)             50,500,000                  
Sale of Stock, Price Per Share (in Dollars per share)               $ 8.00                
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Net 215,000                              
Proceeds from Stock Options Exercised (in Dollars) 958,000 12,000                            
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized (in Dollars) $ 45,400,000                              
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 2 years 6 months