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STOCK-BASED COMPENSATION - Summary of Stock Options Outstanding and Exercisable by Price Range (Details) - $10.04–$15.06 [Member]
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2017
USD ($)
$ / shares
shares
Outstanding and Exercisable [Abstract]  
Outstanding and Exercisable, Number of Options Outstanding at December 31, 2017 | shares 500
Outstanding and Exercisable, Weighted Average Remaining Contractual Life (Years) 1 year 6 months
Outstanding and Exercisable, Weighted Average Exercise Price $ 10.04
Outstanding and Exercisable, Aggregate Intrinsic Value | $ $ 81 [1]
Outstanding and Exercisable, Lower range limit (in dollars per share) $ 10.04
Outstanding and Exercisable, Upper range limit (in dollars per share) $ 15.06
[1] The difference between the stock option’s exercise price and the closing price of common stock at December 31, 2017.