Earnings Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Earnings Per Share, Basic and Diluted [Abstract]
Weighted average shares outstanding—basic	24,837,000	24,310,000	24,720,000	24,055,000
Dilutive effect of employee awards	278,000	380,000	305,000	407,000
Weighted average shares outstanding—diluted	25,115,000	24,690,000	25,025,000	24,462,000
Net income	$ 12,999	$ 16,685	$ 40,009	$ 45,840
Net income per basic share	$ 0.52	$ 0.69	$ 1.62	$ 1.91
Net income per diluted share	$ 0.52	$ 0.68	$ 1.60	$ 1.87
Earnings Per Share, Diluted, Other Disclosures [Abstract]
Dilutive securities excluded from calculation of dilutive shares	758	2,999	44,563	82,053