Note 2 - Net Income Per Share - Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023
Net income	$ 22,631	$ 50,644	$ 37,427	$ 106,567
Shares used in basic Net income per share (in shares)	137,548	137,735	137,480	137,573
Dilutive effect of stock options, RSUs, ESPP shares, and equity awards with a market condition or performance condition (in shares)	695	2,033	1,005	2,393
Shares used in diluted Net income per share (in shares)	138,243	139,768	138,485	139,966
Basic (in dollars per share)	$ 0.16	$ 0.37	$ 0.27	$ 0.77
Diluted (in dollars per share)	$ 0.16	$ 0.36	$ 0.27	$ 0.76
Stock options, RSUs, ESPP shares, and equity awards with a market condition or performance condition excluded as they are antidilutive (in shares)	1,001	158	898	115