Income Taxes - Provision for Income Taxes Attributable to Income from Continuing Operations (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 26, 2015	Jun. 27, 2015	Mar. 28, 2015	Dec. 31, 2014	Sep. 27, 2014	Jun. 28, 2014	Mar. 29, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current:
U.S. Federal									$ 19,544	$ 20,822	$ 22,797
State									4,469	4,838	3,609
Foreign									449	590	1,442
Current income taxes provision, Total									24,462	26,250	27,848
Deferred:
U.S. Federal									1,183	489	1,922
State									(730)	891	524
Foreign									89	99	50
Deferred income taxes provision, Total									542	1,479	2,496
Total	$ 5,782	$ 5,754	$ 8,300	$ 5,168	$ 6,310	$ 7,958	$ 8,442	$ 5,019	$ 25,004	$ 27,729	$ 30,344