CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Allocated share-based compensation expense	$ 25,573	$ 19,471	$ 49,172	$ 36,973
Amortization of acquisition intangible assets	2,594	3,358	5,217	6,726
Cost of revenue
Allocated share-based compensation expense	1,580	1,047	3,062	2,007
Amortization of acquisition intangible assets	1,477	2,003	2,967	4,013
Research and development
Allocated share-based compensation expense	10,313	7,496	19,810	13,953
Sales and marketing
Allocated share-based compensation expense	6,414	4,841	12,192	9,184
Amortization of acquisition intangible assets	1,117	1,355	2,250	2,713
General and administrative
Allocated share-based compensation expense	$ 7,266	$ 6,087	$ 14,108	$ 11,829