PRO FORMA FINANCIAL INFORMATION (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018
Disposal Group
Pro forma revenue	$ 29,215			$ 47,607			$ 113,348	$ 147,445
Pro forma net income (loss)	2,856	$ 52,567	$ 291,623	(529)	$ 1,949	$ 622	347,046	2,042
Pro forma net income (loss) attributable to the Company	$ 2,848			$ (528)			$ 347,211	$ 2,027
Pro forma net (loss) income attributable to common stockholders per share, basic	$ (0.20)			$ (0.35)			$ 27.36	$ (0.77)
Pro forma net (loss) income attributable to common stockholders per share, diluted	$ (0.20)			$ (0.35)			$ 25.36	$ (0.77)
Pro Forma
Disposal Group
Pro forma revenue	$ 27,047			$ 41,193			$ 97,971	$ 128,074
Pro forma net income (loss)	1,513			(1,124)			412,341	102
Pro forma net income (loss) attributable to the Company	1,510			(1,131)			412,310	65
Pro forma net (loss) income attributable to common stockholders	$ (2,960)			$ (5,051)			$ 399,368	$ (11,312)