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STOCK-BASED COMPENSATION (Details 1) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Stock options    
Outstanding at beginning of period 435,800 247,400
Granted 7,000 262,000
Exercised   (26,333)
Forfeited (18,000) (47,267)
Outstanding at end of period 424,800 435,800
Exercisable at end of period 411,133  
Weighted average exercise price    
Outstanding at beginning of period $ 8.35 $ 8.75
Granted 5.60 7.30
Exercised   4.55
Forfeited 8.54 6.74
Outstanding at end of period 8.30 $ 8.35
Exercisable at end of period $ 8.36  
Weighted average remaining contractual term    
Outstanding at beginning of period 7 years 6 months 5 years 10 months 24 days
Granted   9 years 2 months 12 days
Forfeited   6 years 9 months 18 days
Outstanding at end of period 6 years 6 months 7 years 6 months
Exercisable at the end of period 6 years 4 months 24 days  
Aggregate intrinsic value    
Outstanding at beginning of period $ 216 $ 135
Granted   81
Outstanding at end of period 22 $ 216
Exercisable at end of period $ 22