Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenue:
Revenue	$ 110,405	$ 69,453	$ 352,361	$ 235,235
Cost of revenue:
Cost of revenue	62,244	38,872	206,752	135,399
Gross profit	48,161	30,581	145,609	99,836
Operating expenses:
Research and development	14,867	12,930	45,513	40,335
Sales and marketing	9,763	8,057	27,404	25,411
General and administrative	9,649	7,707	28,726	23,097
Total operating expenses	34,279	28,694	101,643	88,843
Income from operations	13,882	1,887	43,966	10,993
Other (expense) income:
Interest income	106	687	658	2,373
Interest expense	(1,296)	(1,308)	(3,898)	(3,849)
Other, net	900	(890)	701	(1,252)
Total other expense	(290)	(1,511)	(2,539)	(2,728)
Income before income taxes	13,592	376	41,427	8,265
Income tax provision (benefit)	2,807	(328)	6,119	943
Net income	$ 10,785	$ 704	$ 35,308	$ 7,322
Net income per share:
Basic (in dollars per share)	$ 0.32	$ 0.02	$ 1.06	$ 0.22
Diluted (in dollars per share)	$ 0.32	$ 0.02	$ 1.04	$ 0.22
Shares used in computing net income per share:
Basic weighted average common shares	33,477	32,344	33,159	32,584
Diluted weighted average common shares	34,174	33,323	34,070	33,821
Product
Revenue:
Revenue	$ 104,799	$ 64,290	$ 334,126	$ 217,201
Cost of revenue:
Cost of revenue	56,427	33,587	189,118	118,105
Services
Revenue:
Revenue	5,606	5,163	18,235	18,034
Cost of revenue:
Cost of revenue	$ 5,817	$ 5,285	$ 17,634	$ 17,294