Future Minimum Lease Payments under Scheduled Leases (Detail) - USD ($) $ in Thousands	Dec. 29, 2018	Dec. 30, 2017
Debt Disclosure [Abstract]
2019	$ 6,392
2020	3,511
2021	4,191
2022	2,620
2023	2,263
Thereafter	4,631
Total minimum payments	23,608
Amount representing interest	1,666
Obligations under capital leases	21,942	$ 27,150
Obligations due within one year	5,896
Long-term obligations under capital leases	16,046
2019	65,071
2020	60,378
2021	50,744
2022	44,798
2023	36,308
Thereafter	232,423
Total minimum payments	$ 489,722