Accrued Expenses and Other Long-Term Liabilities - Summary of Self-Insurance Liability (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Payables And Accruals [Abstract]
Balance at beginning of the year	$ 164,372	$ 172,243	$ 160,904
Charged to costs and expenses	64,236	59,366	77,242
Reinsurance recoverable	8,068
Payments	(66,325)	(67,237)	(65,903)
Balance at end of the year	$ 170,351	$ 164,372	$ 172,243
Discount rate	1.98%	1.47%	0.82%