Earnings Per Common Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 28, 2015	Mar. 29, 2014	Mar. 28, 2015	Mar. 29, 2014
Earnings Per Common Share [Abstract]
Net income	$ 11,706	$ 7,779	$ 25,492	$ 16,924
Weighted average common shares outstanding	14,986,000	15,245,000	15,047,000	15,299,000
Dilutive potential common shares	169,000	189,000	165,000	188,000
Total diluted weighted average shares outstanding	15,155,000	15,434,000	15,212,000	15,487,000
Earnings per share, Basic	$ 0.78	$ 0.51	$ 1.69	$ 1.11
Earnings per share, Diluted	$ 0.77	$ 0.50	$ 1.68	$ 1.09
Antidilutive securities excluded from computation of earnings per share, Amount	200,000	300,000	100,000	200,000