Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Consolidated Statements of Income
Revenues	$ 886,677	$ 837,554	$ 868,267
Costs of revenues	359,151	327,270	346,868
Gross profit	527,526	510,284	521,399
Operating expenses:
Research and development	287,887	257,150	238,347
Selling, general and administrative	201,339	196,437	197,844
Operating expenses	489,226	453,587	436,191
Operating income	38,300	56,697	85,208
Other income (expense):
Interest income and other, net	11,143	13,185	6,647
Interest expense	(34,142)	(20,233)	(19,694)
Income before income taxes	15,301	49,649	72,161
Provision (benefit) for income taxes	2,770	30,384	(11,430)
Net income	$ 12,531	$ 19,265	$ 83,591
Earnings per share:
Basic (in dollars per share)	$ 0.29	$ 0.44	$ 1.94
Diluted (in dollars per share)	$ 0.28	$ 0.43	$ 1.90
Weighted-average common shares outstanding:
Basic (in shares)	43,775	43,346	43,159
Diluted (in shares)	44,372	44,290	44,044