CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Allocated share-based compensation expense	$ 24,594	$ 21,606	$ 73,766	$ 58,579
Amortization of acquisition intangible assets	2,500	3,070	7,717	9,796
Cost of revenue
Allocated share-based compensation expense	1,639	1,222	4,701	3,229
Amortization of acquisition intangible assets	1,465	1,800	4,432	5,813
Research and development
Allocated share-based compensation expense	10,081	8,322	29,891	22,275
Sales and marketing
Allocated share-based compensation expense	5,672	5,912	17,864	15,096
Amortization of acquisition intangible assets	1,035	1,270	3,285	3,983
General and administrative
Allocated share-based compensation expense	$ 7,202	$ 6,150	$ 21,310	$ 17,979