Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenue:
Total revenue	$ 523,029	$ 595,424
Cost of revenue:
Total cost of revenue	184,778	214,854
Gross profit	338,251	380,570
Operating expenses:
Research and development	113,154	119,669
Sales and marketing	57,086	51,053
General and administrative	18,349	15,506
Total operating expenses	188,589	186,228
Income from operations	149,662	194,342
Other income (expense), net	12,157	12,333
Income before income taxes	161,819	206,675
Provision for (benefit from) income taxes	23,388	5,646
Net income	138,431	201,029
Net income attributable to common stockholders:
Basic	138,431	200,911
Diluted	$ 138,431	$ 200,918
Net income per share attributable to common stockholders:
Basic (in dollars per share)	$ 1.82	$ 2.65
Diluted (in dollars per share)	$ 1.73	$ 2.47
Weighted-average shares used in computing net income per share attributable to common stockholders:
Basic (in shares)	76,264	75,920
Diluted (in shares)	79,939	81,201
Product
Revenue:
Total revenue	$ 410,906	$ 505,415
Cost of revenue:
Total cost of revenue	163,629	198,152
Service
Revenue:
Total revenue	112,123	90,009
Cost of revenue:
Total cost of revenue	$ 21,149	$ 16,702