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STOCK OPTIONS - STOCK COMPENSATION (Details) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of Shares, Outstanding 218,075  
Weighted Average Exercise Price per share, Outstanding (in dollars per share) $ 6.22  
Employee Stock Option [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of Shares, Outstanding   423,817
Number of Shares, Granted 0 89,000
Number of Shares, Exercised (200,158) (16,722)
Number of Shares, Forfeited 0 (6,793)
Number of Shares, Expired 0 (71,069)
Number of Shares, Outstanding 418,233  
Number of Shares, Vested 158,742  
Weighted Average Exercise Price per share, Outstanding (in dollars per share)   $ 5.68
Weighted Average Exercise Price per share, Granted (in dollars per share)   7.09
Weighted Average Exercise Price per share, Exercised (in dollars per share) $ 4.02 3.65
Weighted Average Exercise Price per share, Forfeited (in dollars per share)   7.86
Weighted Average Exercise Price per share, Expired (in dollars per share)   $ 10.72
Weighted Average Exercise Price per share, Outstanding (in dollars per share) 5.17  
Weighted Average Exercise Price per share, Vested (in dollars per share) $ 5.90  
Aggregate Intrinsic Value, Outstanding (in dollars) $ 335,310  
Aggregate Intrinsic Value, Vested (in dollars) $ 297,337