Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Revenue	$ 1,214,010	$ 1,092,584	$ 883,911
Cost of product revenue	658,362	518,612	438,114
Amortization of acquired intangible assets	11,721	18,544	12,638
Total cost of revenue	670,083	537,156	450,752
Gross profit	543,927	555,428	433,159
Operating expenses:
Research and development	141,607	140,629	113,149
Selling and marketing	231,548	210,411	162,110
General and administrative	83,103	97,501	84,771
Amortization of acquired intangible assets	1,051	1,065	439
Total operating expenses	457,309	449,606	360,469
Operating income	86,618	105,822	72,690
Other income, net	12,215	2,800	3,676
Income before income taxes	98,833	108,622	76,366
Income tax expense	13,533	20,630	25,402
Net income	$ 85,300	$ 87,992	$ 50,964
Net income per share:
Basic	$ 3.04	$ 3.18	$ 1.85
Diluted	$ 2.97	$ 3.07	$ 1.77
Number of shares used in per share calculations:
Basic	28,097	27,692	27,611
Diluted	28,735	28,640	28,753