Related Party Transactions - Summary of Rental Payments Related to Capital Leases (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2018	Jul. 02, 2017	Jul. 01, 2018	Jul. 02, 2017
Beacon Investment Corporation [Member]
Related Party Transaction [Line Items]
Rental payments related to capital leases	$ 1,110	$ 1,092	$ 2,236	$ 2,203
HLP, SPC & Adjacent Sales Facility [Member]
Related Party Transaction [Line Items]
Rental payments related to capital leases	$ 1,049	$ 1,019	$ 2,098	$ 2,037