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Note 6 - Stockholders' Equity (Issue of Warrants to purchase shares of the Company's common stock) (Details) (USD $)
 1 Months Ended 3 Months Ended
Dec. 31, 2013
Mar. 31, 2013
Jan. 31, 2013
Dec. 31, 2012
Mar. 31, 2012
Feb. 29, 2012
Jun. 30, 2011
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Company issued warrants to purchase unregistered shares of the Company's common stock 400,000   75,000 325,000 300,000 500,000 1,855,000 225,000 71,000 335,000
Exercise price per share in association with stock subscription agreements $ 0.21   $ 0.41 $ 0.41   $ 1.00 $ 1.05 $ 1.00 $ 3.00 $ 3.00
Warrants term           5 years 5 years      
Warrants expiration date Dec. 31, 2016   Dec. 31, 2015 Dec. 31, 2015 Dec. 31, 2017     Oct. 31, 2015 Jul. 30, 2015 Dec. 31, 2015
Company issued its Chief Executive Officer five year warrants to purchase common stock   1,000,000                
Company issued its Chief Financial Officer five year warrants to purchase common stock   500,000                
Company recognized an amount in compensation expense   $ 210,000                
Exercise price per share in association with stock issued to Chief Executive Officer and Chief Financial Officer   $ 0.30                
Minimum [Member]
                    
Exercise price per share in association with stock subscription agreements         $ 2.00          
Maximum [Member]
                    
Exercise price per share in association with stock subscription agreements         $ 4.00