Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenue:
Revenue	$ 122,965	$ 74,305	$ 241,956	$ 165,782
Cost of revenue:
Cost of revenue	71,066	42,556	144,508	96,527
Gross profit	51,899	31,749	97,448	69,255
Operating expenses:
Research and development	16,040	13,720	30,646	27,405
Sales and marketing	9,437	8,436	17,641	17,354
General and administrative	10,041	7,583	19,077	15,390
Total operating expenses	35,518	29,739	67,364	60,149
Income from operations	16,381	2,010	30,084	9,106
Other (expense) income:
Interest income	70	845	552	1,686
Interest expense	(1,299)	(1,311)	(2,602)	(2,541)
Other, net	421	(189)	(199)	(362)
Total other expense	(808)	(655)	(2,249)	(1,217)
Income before income taxes	15,573	1,355	27,835	7,889
Income tax provision	2,271	799	3,312	1,271
Net income	$ 13,302	$ 556	$ 24,523	$ 6,618
Net income per share:
Basic (in dollars per share)	$ 0.40	$ 0.02	$ 0.74	$ 0.20
Diluted (in dollars per share)	$ 0.39	$ 0.02	$ 0.72	$ 0.19
Shares used in computing net income per share:
Basic weighted average common shares	33,116	32,729	32,998	32,706
Diluted weighted average common shares	33,958	33,901	34,023	34,064
Product
Revenue:
Revenue	$ 117,194	$ 68,714	$ 229,327	$ 152,911
Cost of revenue:
Cost of revenue	65,519	37,188	132,691	84,518
Services
Revenue:
Revenue	5,771	5,591	12,629	12,871
Cost of revenue:
Cost of revenue	$ 5,547	$ 5,368	$ 11,817	$ 12,009