Earnings Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Sep. 27, 2014	Jun. 28, 2014	Mar. 29, 2014	Dec. 28, 2013	Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 29, 2012	Sep. 27, 2014	Sep. 28, 2013	Sep. 29, 2012
Earnings Per Share [Abstract]
Stock Repurchased During Period, Shares									733,447	1,821,698
Net income	$ 26,450	$ 24,584	$ 18,516	$ 17,663	$ 24,464	$ 23,204	$ 17,975	$ 16,616	$ 87,213	$ 82,259	$ 62,089
Basic weighted average common shares outstanding									33,785,000	34,330,000	34,874,000
Dilutive effect of stock options									870,000	562,000	655,000
Diluted weighted average shares outstanding									34,655,000	34,892,000	35,529,000
Basic	$ 0.78	$ 0.73	$ 0.55	$ 0.52	$ 0.73	$ 0.69	$ 0.52	$ 0.48	$ 2.58	$ 2.40	$ 1.78
Earnings Per Share, Diluted	$ 0.77	$ 0.71	$ 0.53	$ 0.51	$ 0.71	$ 0.68	$ 0.52	$ 0.47	$ 2.52	$ 2.36	$ 1.75
Antidilutive securities excluded from computation of diluted earnings per share									500,000	1,900,000	1,400,000