Leases - Summary of Balances Related to Lease Portfolio within Condensed Consolidated Statement of Operations (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 28, 2020	Jun. 30, 2019	Jun. 28, 2020	Jun. 30, 2019
Lessee Disclosure [Line Items]
Total lease cost	$ 10,768	$ 9,670	$ 21,503	$ 19,422
Cost of sales
Lessee Disclosure [Line Items]
Operating lease costs	1,385	1,342	2,770	2,683
Short-term and variable leases	3,057	2,317	5,657	4,579
Depreciation expense from financing leases	353	354	707	707
Total lease cost	4,795	4,013	9,134	7,969
SD&A expenses
Lessee Disclosure [Line Items]
Operating lease costs	4,710	3,026	9,379	5,922
Short-term and variable leases	451	779	1,341	1,838
Depreciation expense from financing leases	571	1,137	1,142	2,276
Total lease cost	5,732	4,942	11,862	10,036
Interest expense, net
Lessee Disclosure [Line Items]
Interest expense on financing lease obligations	241	715	507	1,417
Total lease cost	$ 241	$ 715	$ 507	$ 1,417