Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenue:
Total revenue	$ 662,428	$ 474,560	$ 342,958
Cost of revenue:
Total cost of revenue	375,983	275,976	198,806
Gross profit	286,445	198,584	144,152
Operating expenses:
Research and development	65,431	61,833	53,931
Sales and marketing	47,548	38,746	34,290
General and administrative	46,141	39,964	31,726
Total operating expenses	159,120	140,543	119,947
Income from operations	127,325	58,041	24,205
Other (expense) income:
Interest income	209	738	2,955
Interest expense	(4,835)	(5,211)	(5,155)
Other, net	(2,271)	2,318	(1,083)
Total other expense	(6,897)	(2,155)	(3,283)
Income before income taxes	120,428	55,886	20,922
Income tax provision	21,778	5,904	3,888
Net income	$ 98,650	$ 49,982	$ 17,034
Net income per share:
Basic	$ 2.94	$ 1.50	$ 0.52
Diluted	$ 2.88	$ 1.46	$ 0.50
Shares used in computing net income per share:
Basic weighted average common shares	33,555	33,257	32,559
Diluted weighted average common shares	34,268	34,128	33,828
Product
Revenue:
Total revenue	$ 634,445	$ 449,903	$ 319,505
Cost of revenue:
Total cost of revenue	349,558	252,390	175,732
Services
Revenue:
Total revenue	27,983	24,657	23,453
Cost of revenue:
Total cost of revenue	$ 26,425	$ 23,586	$ 23,074