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STOCK-BASED COMPENSATION (Stock Option Award Activity) (Details) - $ / shares
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2016
Number of Options Exercisable          
Vested (in shares)     (125,880)    
Common stock options          
Number of Options outstanding          
Outstanding at the beginning of the year (in shares)     801,690    
Granted (in shares) 131,500 55,000 299,880 291,500  
Exercised (in shares)     (27,818)    
Forfeited (in shares)     (165,192)    
Outstanding at the end of the reporting period (in shares) 908,560   908,560   801,690
Number of Options Exercisable          
Exercisable at the beginning of the year (in shares)     419,174    
Vested (in shares)     (329,733)    
Forfeited (in shares)     (129,901)    
Exercisable at the end of the reporting period (in shares) 591,188   591,188   419,174
Weighted Average Exercise Price Outstanding          
Outstanding at the beginning of period (in dollars per share)     $ 5.25    
Granted (in dollars per share)     4.44    
Exercised (in dollars per share)     1.95    
Forfeited (in dollars per share)     6.32    
Outstanding at the end of the reporting period (in dollars per share) $ 4.94   4.94   $ 5.25
Weighted Average Exercise Price Exercisable          
Exercisable at the beginning of the reporting period (in dollars per share)     5.94    
Vested exercisable (in dollars per share)     4.55    
Forfeited (in dollars per share)     7.13    
Exercisable at the end of the reporting period (in dollars per share) 5.30   5.30   5.94
Weighted Average Grant Date Fair Value Outstanding          
Outstanding at the beginning of the reporting period (in dollars per share)     3.32    
Granted (in dollars per share)     2.67    
Exercised (in dollars per share)     1.16    
Forfeited (in dollars per share)     4.15    
Outstanding at the end of the reporting period (in dollars per share) 3.06   3.06   3.32
Weighted Average Grant Date Fair Value Exercisable          
Exercisable at the beginning of the reporting period (in dollars per share)     3.86    
Vested options exercisable (in dollars per share)     2.76    
Exercised options exercisable (in dollars per share)     1.16    
Forfeited options exercisable (in dollars per share)     4.69    
Exercisable at the end of the reporting period (in dollars per share) $ 3.32   $ 3.32   $ 3.86
Weighted Average Remaining Life In Years Outstanding          
Outstanding Weighted Average Remaining Life (in years)     8 years 2 months 23 days   7 years 4 months 24 days
Granted (in years)     9 years 6 months 15 days    
Weighted Average Remaining Life Exercisable          
Exercisable, Weighted Average Remaining Life     7 years 11 months 23 days   6 years
Granted (in years)     8 years 6 months 26 days