Income Taxes - Components of Income Tax Provision (Benefit) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 26, 2015	Dec. 27, 2014
Current:
Federal	$ 61,251	$ 55,140	$ 48,293
State	5,948	3,578	2,882
Current, Total	67,199	58,718	51,175
Deferred:
Federal	(4,563)	(4,874)	(597)
State	(325)	(232)	(35)
Deferred, Total	(4,888)	(5,106)	(632)
Total	$ 62,311	$ 53,612	$ 50,543