Future Minimum Lease Payments under Scheduled Leases (Detail) $ in Thousands	Dec. 29, 2018 USD ($)
Leases [Abstract]
2019	$ 6,392
2020	3,511
2021	4,191
2022	2,620
2023	2,263
Thereafter	4,631
Total minimum payments	23,608
Less: amount representing interest	(1,666)
Obligations under capital leases	21,942
Less: current 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