Income Taxes - Income (Loss) Before Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Domestic	$ (40,963)	$ (1,723)	$ 2,468
Foreign	(20,051)	6,281	3,359
(LOSS) INCOME BEFORE INCOME TAX EXPENSE (BENEFIT)	$ (61,014)	$ 4,558	$ 5,827