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STOCK COMPENSATION PLAN (Narrative) (Details) - USD ($)
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2016
Dec. 31, 2013
Executive Management [member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vested accerlerated shares   178,600        
Stock Option [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based payment award, description     Stock options are generally granted with an exercise price equal to 100% of the fair value of the common stock at the date of grant.      
Unrecognized compensation cost related to non-vested stock options $ 0 $ 0 $ 0 $ 0    
Compensation cost related to stock award plan $ 0 528,000 $ 0 621,000    
Equity Incentive Plan [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based payment award, description     Under the terms of the 2009 Plan, each option agreement cannot have an exercise price that is less than 100% of the fair value of the shares covered by the option on the date of grant. In the case of an ISO granted to any 10% stockholder, the exercise price shall not be less than 110% of the fair value of the shares covered by the option on the date of grant      
Share-based payment award, shares authorized, maximum 1,183,000   1,183,000      
Share-based payment award, exercise period from the grant date     10 years      
Incentive Stock Options (ISO) [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based payment award, exercise period from the grant date     5 years      
Restricted Stock [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based payment award, shares authorized, maximum 823,122   823,122      
Unrecognized compensation cost related to non-vested stock options $ 1,200,000   $ 1,200,000      
Compensation cost related to stock award plan 109,000 1,500,000 306,000 1,600,000    
Compensation cost related to stock award plan, net of tax $ 63,000 $ 1,200,000 $ 174,000 1,300,000    
Number of additional shares authorized         760,000 300,000
Number of shares issued     31,616      
Unrecognized compensation expense recognition period     3 years 3 months 29 days      
Number of shares, Vested   66,667 4,000      
Fair value of shares vested     $ 84,000 $ 1,500,000