Leases - Quantitative data related to our leases (Detail) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 28, 2019 USD ($)	Sep. 28, 2019 USD ($)
Disclosure of Leases [Line Items]
Operating lease cost	$ 5,922	$ 17,647
Finance lease cost:
Total finance lease cost	5,165	15,505
Total lease cost	11,087	33,152
Cash paid for amounts included in measurement of lease liabilities:
Operating cash flows from operating leases		16,766
Operating cash flows from finance leases		8,451
Financing cash flows from finance leases		6,538
Assets
Total leased assets	159,576	159,576
Liabilities
Total leased liabilities	$ 174,867	$ 174,867
Weighted-average remaining lease term - operating leases	9 years 3 months 18 days	9 years 3 months 18 days
Weighted-average remaining lease term - finance leases	10 years 3 months 18 days	10 years 3 months 18 days
Weighted-average discount rate - operating leases	3.80%	3.80%
Weighted-average discount rate - finance leases	30.80%	30.80%
Maturity Of Lease Liabilities [Abstract]
2019	$ 5,957	$ 5,957
2020	19,223	19,223
2021	16,853	16,853
2022	15,248	15,248
2023	12,161	12,161
Thereafter	44,265	44,265
Total lease payments	113,707	113,707
Less imputed interest	(20,491)	(20,491)
Present value of lease liabilities	93,216	93,216
2019	4,904	4,904
2020	19,307	19,307
2021	18,833	18,833
2022	18,038	18,038
2023	16,194	16,194
Thereafter	79,529	79,529
Total lease payments	156,805	156,805
Less imputed interest	(75,154)	(75,154)
Present value of lease liabilities	81,651	81,651
Other Assets
Assets
Operating lease assets	92,022	92,022
Accrued Expenses and Other Current Liabilities
Liabilities
Current operating	17,362	17,362
Current Portion of Long-term Debt and Finance Lease Obligations
Liabilities
Current finance	8,878	8,878
Deferred Credits and Other Liabilities
Liabilities
Non-current operating	75,854	75,854
Long-term Debt and Finance Lease Obligations Due After One Year
Liabilities
Non-current finance	72,773	72,773
Property, Plant and Equipment, Net
Assets
Finance lease assets	67,554	67,554
Cost of Products Sold
Disclosure of Leases [Line Items]
Operating lease cost	4,932	16,075
Finance lease cost:
Amortization of leased assets	2,377	7,054
Marketing, Administrative and Other Expenses
Disclosure of Leases [Line Items]
Operating lease cost	990	1,572
Interest Expense, Net
Finance lease cost:
Interest on lease liabilities	$ 2,788	$ 8,451