CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 02, 2022	Apr. 03, 2021
Revenue:
Revenue	$ 184,948	$ 162,074
Cost of revenue:
Cost of revenue	93,156	75,832
Gross profit	91,792	86,242
Operating expenses:
Sales and marketing	36,091	28,051
Research and development	29,817	24,364
General and administrative	16,031	13,025
Total operating expenses	81,939	65,440
Operating income	9,853	20,802
Interest and other expense, net:
Interest income (expense), net	35	(125)
Other income (expense), net	(68)	88
Total interest and other expense, net	(33)	(37)
Income before income taxes	9,820	20,765
Income taxes	1,701	150
Net income	$ 8,119	$ 20,615
Net income per common share:
Basic (in dollars per share)	$ 0.13	$ 0.33
Diluted (in dollars per share)	$ 0.12	$ 0.31
Weighted-average number of shares used to compute net income per common share
Basic (in shares)	64,489	62,554
Diluted (in shares)	68,405	67,019
Net income
Unrealized loss on available-for-sale marketable securities, net	$ (1,161)	$ 0
Foreign currency translation adjustments, net	(71)	(35)
Total other comprehensive loss, net of tax	(1,232)	(35)
Comprehensive income	6,887	20,580
Systems
Revenue:
Revenue	174,426	153,302
Cost of revenue:
Cost of revenue	85,913	69,663
Services
Revenue:
Revenue	10,522	8,772
Cost of revenue:
Cost of revenue	$ 7,243	$ 6,169