Note 12 Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 27, 2020	Jun. 29, 2019	Jun. 27, 2020	Jun. 29, 2019
Weighted average shares used in computing per share amount:
Net income	$ 44,880	$ 42,921	$ 88,107	$ 121,758
Weighted average common shares outstanding	68,216	69,499	69,657	68,872
Effect of dilutive stock options and restricted stock units	1,429	2,508	1,847	2,588
Denominator for diluted earnings per share	69,645	72,007	71,504	71,460
Net income per share:
Basic	$ 0.66	$ 0.62	$ 1.26	$ 1.77
Diluted	$ 0.64	$ 0.60	$ 1.23	$ 1.70