Note 2 - Net Income Per Share - Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 01, 2023	Apr. 02, 2022
Net income	$ 55,923	$ 36,078
Shares used in basic Net income per share (in shares)	137,418	137,500
Dilutive effect of stock options, RSUs, ESPP shares, and equity awards with a market condition or performance condition (in shares)	2,683	3,781
Shares used in diluted Net income per share (in shares)	140,101	141,281
Basic (in dollars per share)	$ 0.41	$ 0.26
Diluted (in dollars per share)	$ 0.40	$ 0.26
Stock options, RSUs, ESPP shares, and equity awards with a market condition or performance condition excluded as they are antidilutive (in shares)	141	268