INCOME TAXES - Components of the (Benefit From) Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current:
Federal	$ (11,251)	$ 1,050	$ (1,862)
State	399	405	287
Foreign	7,113	3,449	10,313
Total current (benefit from) provision for	(3,739)	4,904	8,738
Deferred:
Federal	(34,573)	(25,356)	(18,939)
State	(8,119)	(5,143)	(3,702)
Foreign	(17,085)	(18,818)	(8,257)
Total deferred (benefit)	(59,777)	(49,317)	(30,898)
Income tax expense (benefit), total	$ (63,516)	$ (44,413)	$ (22,160)