INCOME TAXES - SCHEDULE OF INCOME TAX PROVISIONS (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Tax Disclosure [Abstract]
Income (loss) before provision for income taxes	$ (1,299)	$ (4,618)	$ (20,823)	$ 57,798
Provision for income taxes	$ (88)	$ (22)	$ (200)	$ (313)
Effective tax rate	(6.80%)	(0.50%)	(1.00%)	0.50%