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Note 16 - Technology Development and Licensing Agreements (Details Textual) - USD ($)
3 Months Ended
Jan. 18, 2013
Mar. 31, 2013
Mar. 31, 2016
Dec. 31, 2015
Mar. 31, 2015
Hisun [Member]          
Contractual Obligation         $ 685,787
Proceeds from License Fees Received $ 5,000,000        
Contractual Obligation     $ 852,243 $ 571,615  
Deferred Revenue   $ 5,000,000      
Deferred Revenue Amortization Period   10 years