Note 12 Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Dec. 29, 2018	Dec. 30, 2017
Weighted average shares used in computing per share amount:
Net income (loss)	$ 37,952	$ (154,910)
Weighted average common shares outstanding	68,303	71,605
Effect of dilutive stock options and restricted stock units	2,598	0
Denominator for diluted earnings per share	70,901	71,605
Net income (loss) per share:
Basic	$ 0.56	$ (2.16)
Diluted	$ 0.54	$ (2.16)
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		4,000