Related Party Transactions - Summary of Rental Payments Related to Leases (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018
Beacon Investment Corporation [Member]
Related Party Transaction [Line Items]
Rental payments related to leases	$ 1,151	$ 1,110	$ 2,261	$ 2,236
HLP, SPC & Adjacent Sales Facility [Member]
Related Party Transaction [Line Items]
Rental payments related to leases	$ 1,081	$ 1,049	$ 2,161	$ 2,098