EARNINGS PER SHARE - Components of Numerator and Denominator for Computation of Basic and Diluted Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Numerator:
Net (loss) income attributable to common shareholders - Basic and Diluted	$ (3,128)	$ (441)	$ (56,569)	$ 2,740
Denominator:
Weighted average common shares - Basic (shares)	35,865	35,594	35,797	35,682
Effect of diluted shares:
Share-based awards (shares)	0	0	0	199
Weighted average common shares - Diluted (shares)	35,865	35,594	35,797	35,881
Net (loss) income per share attributable to common shareholders - Basic (in dollars per share)	$ (0.09)	$ (0.01)	$ (1.58)	$ 0.08
Net (loss) income per share attributable to common shareholders - Diluted (in dollars per share)	$ (0.09)	$ (0.01)	$ (1.58)	$ 0.08