Note 12 Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 03, 2021	Mar. 28, 2020	Apr. 03, 2021	Mar. 28, 2020
Weighted average shares used in computing per share amount:
Net income	$ 47,037	$ 4,882	$ 95,058	$ 43,227
Weighted average common shares outstanding	65,249	70,584	65,244	70,377
Effect of dilutive stock options and restricted stock units	1,708	1,661	1,643	2,052
Denominator for diluted earnings per share	66,957	72,245	66,887	72,429
Net income per share:
Basic	$ 0.72	$ 0.07	$ 1.46	$ 0.61
Diluted	$ 0.70	$ 0.07	$ 1.42	$ 0.60