CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Allocated share-based compensation expense	$ 21,606	$ 14,782	$ 58,579	$ 45,047
Amortization of acquisition intangible assets	3,070	2,521	9,796	5,715
Cost of revenue
Allocated share-based compensation expense	1,222	718	3,229	2,805
Amortization of acquisition intangible assets	1,800	1,557	5,813	3,448
Research and development
Allocated share-based compensation expense	8,322	5,468	22,275	15,863
Sales and marketing
Allocated share-based compensation expense	5,912	2,918	15,096	8,714
Amortization of acquisition intangible assets	1,270	964	3,983	2,267
General and administrative
Allocated share-based compensation expense	$ 6,150	$ 5,678	$ 17,979	$ 17,665