EARNINGS (LOSS) PER SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019
Basic and diluted earnings per share attributable to common shareholders
Net income (loss)	$ 13,935	$ 15,623	$ (7,312)	$ (7,186)	$ 29,558	$ (14,498)
Less: net income attributable to noncontrolling interest	95		75		171	154
Net income (loss) attributable to common shareholders	13,840		(7,387)		29,387	(14,652)
Less: earnings allocated to participating securities	360				607	457
Net income (loss) attributable to common shareholders, after earnings allocated to participating securities	$ 13,480		$ (7,387)		$ 28,780	$ (15,109)
Weighted-average number of common shares outstanding	71,153		70,813		71,153	70,813
Basic and diluted earnings (loss) per common share:
Net income (loss) per common share attributable to common shareholders - basic and diluted	$ 0.19		$ (0.10)		$ 0.40	$ (0.21)
Common shares excluded from computation of potentially dilutive shares because of anti-dilutive effect	1,900		1,300		1,500	1,000