INCOME TAXES - Schedule of Effective Income Tax Reconciliation (Details) - USD ($) $ in Thousands		12 Months Ended
	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Tax at federal statutory rate		$ (46,722)	$ 7,975	$ (36,374)
State tax, net of federal benefit		(3,845)	3,280	(3,395)
Research credit		(138)	(41)	(41)
Stock based compensation		2,038	1,259	159
Non-deductible meals and entertainment		129	223	973
Non-deductible other expense		5,837	308	6,508
Change in valuation allowance		48,943	(12,321)	4,792
Uncertain tax provisions		(5,758)	384	(1,611)
Intraperiod tax allocations		(5,767)	0	0
Tax rate changes	$ 25,500	0	0	27,560
Total tax (benefit) expense		$ (5,283)	$ 1,067	$ (1,429)