Note 10 Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 01, 2017	Jul. 02, 2016	Jul. 01, 2017	Jul. 02, 2016
Weighted average shares used in computing per share amount:
Net income	$ 36,404	$ 29,534	$ 112,985	$ 87,033
Weighted average common shares outstanding	75,332	73,620	74,548	75,609
Effect of dilutive stock options and restricted stock units	2,909	3,372	3,369	3,263
Denominator for diluted earnings per share	78,241	76,992	77,917	78,872
Net income per share:
Basic	$ 0.48	$ 0.40	$ 1.52	$ 1.15
Diluted	$ 0.47	$ 0.38	$ 1.45	$ 1.10