Earnings Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 29, 2013	Jun. 30, 2012	Jun. 29, 2013	Jun. 30, 2012
Earnings Per Share, Basic and Diluted [Abstract]
Weighted average shares outstanding—basic	24,310,000	23,633,000	24,055,000	23,538,000
Dilutive effect of employee awards	380,000	421,000	407,000	466,000
Weighted average shares outstanding—diluted	24,690,000	24,054,000	24,462,000	24,004,000
Net income	$ 16,685	$ 17,208	$ 45,840	$ 50,414
Net income per basic share	$ 0.69	$ 0.73	$ 1.91	$ 2.14
Net income per diluted share	$ 0.68	$ 0.72	$ 1.87	$ 2.10
Earnings Per Share, Diluted, Other Disclosures [Abstract]
Dilutive securities excluded from calculation of dilutive shares	2,999	108,501	82,053	97,048