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EQUITY PLANS AND SHARE-BASED COMPENSATION (Share-based compensation cost by award type) (Details) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based compensation cost $ 29,265 $ 123,268
Stock Options [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based compensation cost 29,265 96,938
Restricted Stock Units and Awards [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based compensation cost $ 0 $ 26,330