Leases - Undiscounted Cash Flows for the Finance and Operating Leases (Detail) - USD ($) $ in Thousands	Jun. 29, 2019	Dec. 29, 2018
Operating Leased Assets [Line Items]
2019 Remainder	$ 21,586
2020	39,475
2021	25,065
2022	15,902
2023	8,875
Total future minimum lease payments	110,903
Less amount representing interest (2.1% to 4.4%)	6,136
Present value of minimum lease payments	104,767
Current maturities of long-term debt	39,194	$ 43,561
Long-term debt, excluding current maturities	65,573	$ 84,864
2019 Remainder	445
2020	681
2021	616
2022	622
2023	551
Thereafter	301
Total future minimum lease payments	3,216
Less amount representing interest (2.1% to 4.4%)	287
Present value of minimum lease payments	2,929
Other current liabilities [Member]
Operating Leased Assets [Line Items]
Operating lease, liability, current	715
Deferred income taxes and other noncurrent liabilities [Member]
Operating Leased Assets [Line Items]
Operating lease, liability, non-current	$ 2,214