Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenue:
Total revenue	$ 707,319	$ 540,570	$ 1,374,881	$ 1,063,599
Cost of revenue:
Total cost of revenue	253,141	196,481	495,431	381,259
Gross profit	454,178	344,089	879,450	682,340
Operating expenses:
Research and development	143,293	111,544	275,780	224,698
Sales and marketing	70,625	51,237	141,645	108,323
General and administrative	20,895	14,319	36,368	32,668
Total operating expenses	234,813	177,100	453,793	365,689
Income from operations	219,365	166,989	425,657	316,651
Other income, net	1,719	8,256	3,294	20,413
Income before income taxes	221,084	175,245	428,951	337,064
Provision for income taxes	24,196	30,452	51,697	53,840
Net income	$ 196,888	$ 144,793	$ 377,254	$ 283,224
Net income per share:
Basic (in dollars per share)	$ 2.58	$ 1.91	$ 4.94	$ 3.72
Diluted (in dollars per share)	$ 2.47	$ 1.83	$ 4.73	$ 3.56
Weighted-average shares used in computing net income per share:
Basic (in shares)	76,461	75,808	76,384	76,036
Diluted (in shares)	79,710	79,298	79,677	79,620
Product
Revenue:
Total revenue	$ 566,467	$ 421,413	$ 1,105,612	$ 832,319
Cost of revenue:
Total cost of revenue	225,779	176,432	444,212	340,061
Service
Revenue:
Total revenue	140,852	119,157	269,269	231,280
Cost of revenue:
Total cost of revenue	$ 27,362	$ 20,049	$ 51,219	$ 41,198