Future Minimum Lease Payments under Scheduled Leases (Detail) - USD ($) $ in Thousands	Dec. 30, 2017	Dec. 31, 2016
Debt Disclosure [Abstract]
2018	$ 7,707
2019	6,075
2020	3,193
2021	3,873
2022	2,303
Thereafter	6,114
Total minimum payments	29,265
Amount representing interest	2,115
Obligations under capital leases	27,150	$ 30,427
Obligations due within one year	7,095
Long-term obligations under capital leases	20,055
2018	61,630
2019	56,349
2020	51,287
2021	43,443
2022	37,658
Thereafter	240,761
Total minimum payments	$ 491,128