INCOME (LOSS) PER SHARE - Schedule of Computation of Basic and Diluted Net Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Numerator
Net income (loss) - continuing operations	$ 47,175	$ 3,802	$ (47,874)	$ (22,470)
Less: Net income (loss) attributable to noncontrolling interests	2,560	2,881	9,433	9,460
Net income (loss) attributable to common stockholders - continuing operations	44,615	921	(57,307)	(31,930)
Income (loss) from discontinued operations, net of tax	0	(862)	0	(1,751)
Net income (loss) attributable to common stockholders	$ 44,615	$ 59	$ (57,307)	$ (33,681)
Denominator
Weighted-average common shares outstanding (in shares)	568,634,988	557,221,040	565,227,625	559,726,154
Weighted Average Number Diluted Shares Outstanding Adjustment	7,744,433	9,448,009	0	0
Weighted Average Number of Shares Outstanding, Diluted	576,379,421	566,669,049	565,227,625	559,726,154
Basic and diluted net income (loss) per share (1):
Continuing operations (in usd per share)	$ 0.08	$ 0.00	$ (0.10)	$ (0.06)
Discontinued operations (in usd per share)	0.00	0.00	0.00	0.00
Basic and diluted net income (loss) per share (in usd per share)	$ 0.08	$ 0.00	$ (0.10)	$ (0.06)