INCOME TAXES - Components of (Loss) Income before (Benefits) Provisions from Income Taxes (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Domestic		$ (27,494)	$ 57,493	$ 39,559
Foreign		15,951	28,742	15,776
(Loss) income before (benefit) provision from income taxes	[1]	$ (11,543)	$ 86,235	$ 55,335

[1] On January 1, 2018, the Company adopted the ASC 606 revenue recognition standard and adjusted prior periods to conform. See "Note 2. Significant Accounting Policies" for additional information.