Leases - Summary of Lease Cost and Related Information (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 28, 2019	Sep. 28, 2019
Lease cost
Operating lease cost	$ 8,616	$ 25,591
Short-term lease cost	637	3,023
Variable lease cost	693	1,547
Sublease income	(701)	(2,074)
Total lease cost	9,245	28,087
With Affiliates [Member]
Lease cost
Operating lease cost	2,495	8,196
Short-term lease cost	76	370
Variable lease cost	309	607
Total lease cost	2,880	9,173
With Third Parties [Member]
Lease cost
Operating lease cost	6,121	17,395
Short-term lease cost	561	2,653
Variable lease cost	384	940
Sublease income	(701)	(2,074)
Total lease cost	$ 6,365	$ 18,914