Condensed Consolidated Statement Of Stockholders' Equity (USD $) In Thousands, except Share data	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Balance, value at Dec. 28, 2013	$ 14	$ 54,691	$ 200,023	$ 5,794	$ 260,522
Balance, shares at Dec. 28, 2013	13,886,000				13,886,000
Net earnings			55,336		55,336
Other comprehensive income (loss), net of tax				(611)	(611)
Equity-based compensation expense		5,929			5,929
Common stock repurchased and retired, shares	(1,755,000)				(1,755)
Common stock repurchased and retired, value	(2)	(25,947)	(99,703)		(125,652)
Common stock issued under equity award plans, including tax benefit of $3,924, shares	239,000
Common stock issued under equity award plans, including tax benefit of $3,924, value		3,924			3,924
Balance, value at Sep. 27, 2014	$ 12	$ 38,597	$ 155,656	$ 5,183	$ 199,448
Balance, shares at Sep. 27, 2014	12,370,000				12,370,000