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Note 8 - Common Stock (Details Textual) - USD ($)
1 Months Ended 2 Months Ended 3 Months Ended 5 Months Ended 6 Months Ended 12 Months Ended
Oct. 31, 2014
Sep. 30, 2014
Oct. 31, 2013
May. 30, 2013
Jan. 17, 2013
Jan. 31, 2012
Jun. 30, 2015
Jun. 30, 2014
Nov. 30, 2014
May. 31, 2013
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Feb. 28, 2015
May. 14, 2013
Apr. 30, 2013
Members Of Board Of Directors And Management [Member] | Common Stock [Member]                                    
Stock Issued During Period, Shares, New Issues           1,066,519                        
Stock Issued During Period, Value, New Issues           $ 714,570                        
Members Of Board Of Directors And Management [Member]                                    
Stock Issued During Period, Shares, New Issues           380,954                        
Class of Warrant or Right, Number of Securities Called by Warrants or Rights           571,432                        
Class of Warrant or Right, Exercise Price of Warrants or Rights           $ 1                        
Common Stock [Member] | Common Stock Warrants [Member]                                    
Stock Issued During Period, Shares, New Issues                   2,933,333                
Proceeds from Warrant Exercises                   $ 1,643,333                
Common Stock [Member]                                    
Stock Issued During Period, Shares, New Issues                             407,999      
Stock Issued During Period, Value, New Issues                             $ 408      
Class of Warrant or Right, Number of Securities Called by Warrants or Rights           1,599,784                        
Class of Warrant or Right, Exercise Price of Warrants or Rights           $ 1                        
Stock Issued During Period, Shares, Issued for Services     50,000                   378,205 50,000        
Warrant [Member]                                    
Other General and Administrative Expense       $ 19,617 $ 218,551                          
Warrant Exercise Price Adjustment [Member]                                    
Class of Warrant or Right, Outstanding                                 1,166,666  
Warrants with Modified Exercise Prices [Member] | Scenario, Previously Reported [Member]                                    
Class of Warrant or Right, Exercise Price of Warrants or Rights   $ 16.50                                
Warrants with Modified Exercise Prices [Member]                                    
Class of Warrant or Right, Exercise Price of Warrants or Rights   $ 1                                
Class of Warrant or Right, Outstanding   818,376                                
General and Administrative Expense [Member]                                    
Allocated Share-based Compensation Expense     $ 20,500                   $ 69,057 $ 101,896 231,936      
Third Party Consulting Services [Member]                                    
Stock Issued During Period, Shares, Issued for Services                 378,205                  
Allocated Share-based Compensation Expense                 $ 100,000                  
Expense Associated with Warrant Modifications [Member]                                    
General and Administrative Expense   $ 39,711                     $ 39,712 238,168 0      
Stock Issued During Period, Value, New Issues                             $ 273,360      
Class of Warrant or Right, Number of Securities Called by Warrants or Rights                               49,999,998    
Class of Warrant or Right, Exercise Price of Warrants or Rights         $ 0.60   $ 0.20       $ 0.20   $ 0.66   $ 0.75   $ 0.50 $ 0.60
Proceeds from Warrant Exercises $ 873,400     $ 583,333 $ 1,060,000                          
Allocated Share-based Compensation Expense                         $ 101,191 143,435 $ 310,076      
Stock Issued During Period, Shares, Warrants Exercised 3,176,000                                  
Class of Warrant or Right, Outstanding         2,933,333   56,442,157       56,442,157   5,108,826          
Number Of Warrants Issued During Period         1,766,667                          
Class of Warrant or Right, Unissued         1,166,666                          
General and Administrative Expense             $ 364,889 $ 344,862     $ 766,330 $ 716,664 $ 1,807,605 $ 1,792,160 $ 1,752,765      
Warrant Exercise Fee Per Share $ 0.075