Income Taxes - Significant Components of the Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jan. 03, 2016	Dec. 28, 2014	Dec. 29, 2013
Current:
Federal	$ 20,107	$ 13,153	$ 18,938
State	3,563	2,163	3,221
Total current provision	23,670	15,316	22,159
Deferred:
Federal	10,638	3,638	(7,701)
State	(230)	582	(2,316)
Total deferred provision (benefit)	10,408	4,220	(10,017)
Income tax expense	$ 34,078	$ 19,536	$ 12,142