Condensed Consolidated Statement Of Changes In Stockholders' Equity - 8 months ended Sep. 08, 2015 - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid In Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Total
Balance at Dec. 30, 2014	$ 24	$ 133,883	$ (10,000)	$ 87,076	$ 210,983
Balance, shares at Dec. 30, 2014	23,443,046
Net income				8,072	8,072
Share-based compensation costs		2,146			2,146
Stock option exercises, including tax effects		149			$ 149
Stock option exercises, including tax effects, shares	10,650				10,650
Treasury stock purchases			(3,000)		$ (3,000)
Treasury stock purchases, shares	(189,027)
Balance at Sep. 08, 2015	$ 24	$ 136,178	$ (13,000)	$ 95,148	$ 218,350
Balance, shares at Sep. 08, 2015	23,264,669