Note 2 - Net Income Per Share - Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Jan. 01, 2022
Net income	$ 259,061	$ 178,882	$ 95,922
Shares used in basic Net income per share (in shares)	137,694	137,321	136,619
Dilutive effect of stock options, RSUs, ESPP shares, and equity awards with a market condition or performance condition (in shares)	2,096	3,346	5,524
Shares used in diluted Net income per share (in shares)	139,790	140,667	142,143
Basic (in dollars per share)	$ 1.88	$ 1.3	$ 0.7
Diluted (in dollars per share)	$ 1.85	$ 1.27	$ 0.67
Stock options, RSUs, ESPP shares, and equity awards with a market condition or performance condition excluded as they are antidilutive (in shares)	376	472	638