Note 11 Earnings Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Oct. 01, 2011
Earnings Per Share [Line Items]
Net income	$ 79,351	$ 180,234	$ 68,917
Potentially dilutive securities	6,634	8,306	7,080
Weighted average shares used in computing per share amount:
Basic	82,834	81,284	80,345
Diluted	85,403	83,495	83,158
Net income per share:
Basic	$ 0.96	$ 2.22	$ 0.86
Diluted	$ 0.93	$ 2.16	$ 0.83
Stock Options
Earnings Per Share [Line Items]
Potentially dilutive securities	6,634	7,937	6,839
Restricted stock units
Earnings Per Share [Line Items]
Potentially dilutive securities	0	369	241