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LICENSE AGREEMENT (Details) - USD ($)
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
LICENSE AGREEMENT      
Royalty fees $ 2,864,188 $ 2,527,508 $ 2,477,583
Licensing Agreements      
LICENSE AGREEMENT      
Initial licensing fee $ 500,000    
Amortization period of license fee 17 years    
Quarterly payments as a percentage of royalty fee on gross sales 5.00%    
Royalty fees $ 2,864,188 2,527,508 2,477,583
Royalty payable under the license agreement 793,489 659,443  
Gross sales upon which royalties are based $ 57,283,780 $ 50,550,165 $ 49,551,660