Note 4 - Stock-Based Compensation (Details) - Stock Option Activity (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
Dec. 28, 2013	Sep. 29, 2012
Note 4 - Stock-Based Compensation (Details) - Stock Option Activity [Line Items]
Outstanding at September 28, 2013 (in Shares)		918
Outstanding at December 28, 2013 (in Shares)	846	918
Outstanding at December 28, 2013	5 years 317 days
Outstanding at December 28, 2013 (in Dollars)	$ 8,332
Vested and anticipated to vest in the future at December 28, 2013 (in Shares)	841
Vested and anticipated to vest in the future at December 28, 2013	5 years 310 days
Vested and anticipated to vest in the future at December 28, 2013 (in Dollars)	8,288
Exercisable at December 28, 2013 (in Shares)	554
Exercisable at December 28, 2013	4 years 142 days
Exercisable at December 28, 2013 (in Dollars)	5,754
Exercised (in Shares)	(72)
Exercised (in Dollars)	$ 592
Minimum [Member]
Note 4 - Stock-Based Compensation (Details) - Stock Option Activity [Line Items]
Outstanding at September 28, 2013		$ 5.43
Outstanding at December 28, 2013	$ 5.43	$ 5.43
Exercised	$ 9.16
Exercised	$ 9.16
Maximum [Member]
Note 4 - Stock-Based Compensation (Details) - Stock Option Activity [Line Items]
Outstanding at September 28, 2013		$ 20.27
Outstanding at December 28, 2013	$ 20.27	$ 20.27
Exercised	$ 13.06
Exercised	$ 13.06
Weighted Average [Member]
Note 4 - Stock-Based Compensation (Details) - Stock Option Activity [Line Items]
Outstanding at September 28, 2013		$ 12.65
Outstanding at December 28, 2013	$ 12.78	$ 12.65
Vested and anticipated to vest in the future at December 28, 2013	$ 12.78
Exercisable at December 28, 2013	$ 12.24
Exercised	$ 11.03
Exercised	$ 11.03

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