EARNINGS PER SHARE (Information Related to EPS Calculation) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Numerator:
Net income (loss)	$ 13,328	$ (5,879)	$ 45,253	$ (4,045)
Net loss attributable to noncontrolling interests	149	791	45	431
Net income (loss) attributable to common stockholders	$ 13,477	$ (5,088)	$ 45,298	$ (3,614)
Denominator:
Weighted-average basic common shares outstanding (in shares)	43,113	42,573	43,109	43,014
Numerator:
Net income attributable to common stockholders	$ 13,477	$ (5,088)	$ 45,298	$ (3,614)
Denominator:
Weighted-average basic common shares outstanding (in shares)	43,113	42,573	43,109	43,014
Restricted stock and stock options (in shares)	158	212	154	215
Warrants (in shares)	0	157	0	157
Weighted-average diluted common shares outstanding (in shares)	43,271	42,942	43,263	43,386
Basic income per share: (in dollars per share)	$ 0.31	$ (0.12)	$ 1.05	$ (0.08)
Diluted income per share: (in dollars per share)	$ 0.31	$ (0.12)	$ 1.05	$ (0.08)