Restructuring - Summary of Charges in Consolidated Statement of Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 20,065	$ 14,097	$ 17,064
Cost of sales
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	(150)	1,208
Research and development
Restructuring Cost and Reserve [Line Items]
Restructuring charges	3,888	1,890	2,990
Sales and marketing
Restructuring Cost and Reserve [Line Items]
Restructuring charges	13,300	10,655	10,968
General and administrative
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 2,877	$ 1,702	$ 1,898