Income Taxes - Components of Income Tax Provision (Benefit) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Current:
Federal	$ 55,140	$ 48,293	$ 42,458
State	3,578	2,882	3,105
Current, Total	58,718	51,175	45,563
Deferred:
Federal	(4,874)	(597)	249
State	(232)	(35)	18
Deferred, Total	(5,106)	(632)	267
Total	$ 53,612	$ 50,543	$ 45,830