Leases - Quantitative data related to our leases (Detail) $ in Thousands	3 Months Ended
	Mar. 30, 2019 USD ($)
Liabilites
Total leased liabilities	$ 175,329
Cash paid for amounts included in measurement of lease liabilities:
Operating cash flows from operating leases	5,707
Operating cash flows from finance leases	2,856
Financing cash flows from finance leases	$ 1,947
Weighted-average remaining lease term - operating leases	9 years 7 months 6 days
Weighted-average remaining lease term - finance leases	10 years 9 months 18 days
Weighted-average discount rate - operating leases	3.80%
Weighted-average discount rate - finance leases	31.80%
Maturity Of Lease Liabilities [Abstract]
2019	$ 16,232
2020	17,613
2021	15,249
2022	13,663
2023	10,764
Thereafter	41,800
Total lease payments	115,321
Less imputed interest	(20,876)
Present value of lease liabilities	94,445
2019	14,430
2020	18,231
2021	17,755
2022	16,959
2023	15,112
Thereafter	78,568
Total lease payments	161,055
Less imputed interest	(80,171)
Present value of lease liabilities	80,884
Accrued expenses and other current liabilities
Liabilites
Current operating	17,793
Current finance	8,267
Deferred credits and other liabilities
Liabilites
Non-Current operating	76,652
Non-Current finance	72,617
Property, plant and equipment, net
Assets
Operating lease assets	94,578
Finance lease assets	67,123
Total leased assets	$ 161,701