Income Taxes - Geographical Breakdown of Income (Loss) before the Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Domestic	$ 34,714	$ 81,641	$ 46,528
Foreign	(5,365)	(7,708)	(10,912)
Income before provision for income taxes	$ 29,349	$ 73,933	$ 35,616