Consolidated Statements of Income Statement - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Revenue	$ 413,145	$ 289,399	$ 885,563	$ 787,232
Cost of product revenue	214,079	149,463	429,060	403,392
Amortization of acquired intangible assets	225	3,095	1,695	9,283
Total cost of revenue	214,304	152,558	430,755	412,675
Gross profit	198,841	136,841	454,808	374,557
Research and development	38,613	33,401	111,929	104,320
Selling and marketing	50,488	42,257	136,144	137,502
General and administrative	28,490	18,372	74,919	61,871
Amortization of acquired intangible assets	256	256	764	796
Total operating expenses	117,847	94,286	323,756	304,489
Operating income	80,994	42,555	131,052	70,068
Other income, net	42,240	900	41,837	3,713
Income before income taxes	123,234	43,455	172,889	73,781
Income tax expense	29,982	7,923	39,156	8,522
Net income	$ 93,252	$ 35,532	$ 133,733	$ 65,259
Basic	$ 3.33	$ 1.26	$ 4.76	$ 2.33
Diluted	$ 3.27	$ 1.24	$ 4.69	$ 2.27
Basic	28,031	28,154	28,084	28,029
Diluted	28,539	28,650	28,502	28,759