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COMMON STOCK AND STOCK INCENTIVE PLANS (Summary of Significant Ranges of Outstanding and Exercisable Stock Options) (Details)
 12 Months Ended
Dec. 31, 2015
$ / shares
shares
Stock Options Outstanding  
Number outstanding (in shares) | shares 415,366
Weighted-average remaining contractual life 3 years 5 months 1 day
Weighted-average exercise price per share (in dollars per share) $ 6.11
Stock Options Exercisable  
Number Exercisable (in shares) | shares 272,033
Weighted-average exercise price per share (in dollars per share) $ 7.77
Options exercisable and expected to vest at the end of the period  
Number of options exercisable (in shares) | shares 272,033
Weighted-average exercise price per share of options exercisable (in dollars per share) $ 7.77
Number of options expected to vest (in shares) | shares 380,531
Weighted-average exercise price per share of options expected to vest (in dollars per share) $ 6.40
Exercise Price Range from Dollars 2.70 to 2.70 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise price, low end of range (in dollars per share) 2.70
Exercise price, high end of range (in dollars per share) $ 2.70
Stock Options Outstanding  
Number outstanding (in shares) | shares 26,666
Weighted-average remaining contractual life 8 years 10 months 28 days
Weighted-average exercise price per share (in dollars per share) $ 2.70
Stock Options Exercisable  
Number Exercisable (in shares) | shares 6,667
Weighted-average exercise price per share (in dollars per share) $ 2.70
Exercise Price Range from Dollars 2.87 to 2.87 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise price, low end of range (in dollars per share) 2.87
Exercise price, high end of range (in dollars per share) $ 2.87
Stock Options Outstanding  
Number outstanding (in shares) | shares 100,000
Weighted-average remaining contractual life 8 years 7 months 21 days
Weighted-average exercise price per share (in dollars per share) $ 2.87
Stock Options Exercisable  
Number Exercisable (in shares) | shares 25,000
Weighted-average exercise price per share (in dollars per share) $ 2.87
Exercise Price Range from Dollars 2.97 to 2.97 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise price, low end of range (in dollars per share) 2.97
Exercise price, high end of range (in dollars per share) $ 2.97
Stock Options Outstanding  
Number outstanding (in shares) | shares 26,666
Weighted-average remaining contractual life 3 years 9 months 29 days
Weighted-average exercise price per share (in dollars per share) $ 2.97
Stock Options Exercisable  
Number Exercisable (in shares) | shares 19,999
Weighted-average exercise price per share (in dollars per share) $ 2.97
Exercise Price Range from Dollars 3.21 to 3.21 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise price, low end of range (in dollars per share) 3.21
Exercise price, high end of range (in dollars per share) $ 3.21
Stock Options Outstanding  
Number outstanding (in shares) | shares 166,666
Weighted-average remaining contractual life 1 year 11 days
Weighted-average exercise price per share (in dollars per share) $ 3.21
Stock Options Exercisable  
Number Exercisable (in shares) | shares 124,999
Weighted-average exercise price per share (in dollars per share) $ 3.21
Exercise Price Range from Dollars 4.17 to 4.17 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise price, low end of range (in dollars per share) 4.17
Exercise price, high end of range (in dollars per share) $ 4.17
Stock Options Outstanding  
Number outstanding (in shares) | shares 2,721
Weighted-average remaining contractual life 2 years 8 months 1 day
Weighted-average exercise price per share (in dollars per share) $ 4.17
Stock Options Exercisable  
Number Exercisable (in shares) | shares 2,721
Weighted-average exercise price per share (in dollars per share) $ 4.17
Exercise Price Range from Dollars 6.51 to 6.51 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise price, low end of range (in dollars per share) 6.51
Exercise price, high end of range (in dollars per share) $ 6.51
Stock Options Outstanding  
Number outstanding (in shares) | shares 15,361
Weighted-average remaining contractual life 1 year 9 months
Weighted-average exercise price per share (in dollars per share) $ 6.51
Stock Options Exercisable  
Number Exercisable (in shares) | shares 15,361
Weighted-average exercise price per share (in dollars per share) $ 6.51
Exercise Price Range from Dollars 18.75 to 18.75 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise price, low end of range (in dollars per share) 18.75
Exercise price, high end of range (in dollars per share) $ 18.75
Stock Options Outstanding  
Number outstanding (in shares) | shares 76,620
Weighted-average remaining contractual life 1 month 28 days
Weighted-average exercise price per share (in dollars per share) $ 18.75
Stock Options Exercisable  
Number Exercisable (in shares) | shares 76,620
Weighted-average exercise price per share (in dollars per share) $ 18.75
Exercise Price Range from Dollars 23.31 to 23.31 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise price, low end of range (in dollars per share) 23.31
Exercise price, high end of range (in dollars per share) $ 23.31
Stock Options Outstanding  
Number outstanding (in shares) | shares 666
Weighted-average remaining contractual life 11 days
Weighted-average exercise price per share (in dollars per share) $ 23.31
Stock Options Exercisable  
Number Exercisable (in shares) | shares 666
Weighted-average exercise price per share (in dollars per share) $ 23.31