Financial Information by Quarter (Unaudited) (Details) - Financial Information by Quarter (USD $) In Thousands, except Per 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
Operating results:
Net sales	$ 117,097	$ 113,227	$ 91,436	$ 87,218	$ 98,190	$ 96,946	$ 82,873	$ 85,887	$ 408,978	$ 363,896	$ 363,303
Gross profit	13,849	14,263	11,606	9,055	8,679	10,910	11,051	8,593	48,773	39,233	22,458
Net earnings	$ 4,575	$ 5,797	$ 3,522	$ 2,747	$ 2,345	$ 3,274	$ 3,714	$ 2,402	$ 16,641	$ 11,735	$ 1,809
Net earnings per share amounts:
Basic (in Dollars per share)	$ 0.25	$ 0.32	$ 0.19	$ 0.15	$ 0.13	$ 0.18	$ 0.21	$ 0.14	$ 0.91	$ 0.65	$ 0.10
Diluted (in Dollars per share)	$ 0.24	$ 0.31	$ 0.19	$ 0.15	$ 0.13	$ 0.18	$ 0.20	$ 0.13	$ 0.89	$ 0.64	$ 0.10