Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Total income (loss) before income tax provision	$ (6,810)	$ (15,219)	$ (38,822)
United States
Total income (loss) before income tax provision	(7,089)	(15,647)	(39,334)
International
Total income (loss) before income tax provision	$ 279	$ 428	$ 512