STOCK-BASED COMPENSATION - Summary of Stock Options Under All Plans (Details) - Time-based stock options - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Total Options
Outstanding at the beginning of the period (in shares)	2,173,488
Granted (in shares)	0
Exercised (in shares)	0	0	0
Forfeited and Expired (in shares)	(276,379)
Outstanding at the end of the period (in shares)	1,897,109	2,173,488
Exercisable at the end of the period (in shares)	1,107,266
Weighted Average Exercise Price
Outstanding at the beginning of the period (in dollars per share)	$ 10.76
Granted (in dollars per share)	0
Exercised (in dollars per share)	0
Forfeited/Expired (in dollars per share)	13.87
Outstanding at the end of the period (in dollars per share)	10.30	$ 10.76
Exercisable at the end of the period (in dollars per share)	$ 10.90
Weighted Average Remaining Contractual Term (in years)
Outstanding at the end of the period	7 years 1 month 6 days
Exercisable at the end of the period	6 years 10 months 24 days
Aggregate Intrinsic Value (in thousands)
Outstanding at beginning of period	$ 0
Exercised	0
Outstanding at the end of the period	0	$ 0
Exercisable at the end of the period	$ 0