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Note 3 - Share Based Compensation - Expenses for Continuing Operations (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Selling, General and Administrative Expenses [Member]        
Share-based compensation expense $ 31,610 $ 30,779 $ 221,791 $ 218,653
Share-based compensation expense 31,610 30,779 221,791 218,653
Research and Development Expense [Member]        
Share-based compensation expense 25,074 5,271 59,191 39,644
Share-based compensation expense 25,074 5,271 59,191 39,644
Share-based compensation expense 56,684 36,050 280,982 258,297
Share-based compensation expense $ 56,684 $ 36,050 $ 280,982 $ 258,297