Leases - Lease Costs Incurred By Lease Type, and/or Type Of Payment and Other Supplemental Quantitative Disclosures (Detail) - USD ($) $ in Thousands	4 Months Ended
	Apr. 18, 2020	Apr. 20, 2019
Lease cost:
Amortization of right-of-use assets	$ 2,303	$ 2,058
Interest on lease liabilities	286	313
Operating lease cost	22,129	21,364
Short-term lease cost	596	814
Variable lease cost	7,812	7,905
Total lease cost	33,126	32,454
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from financing leases	286	313
Operating cash flows from operating leases	23,299	22,237
Financing cash flows from financing leases	2,180	1,872
Right-of-use assets obtained in exchange for new financing lease liabilities	40	7,141
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 2,522	$ 6,666
Financing leases, weighted-average remaining lease term	4 years 2 months 12 days	4 years 2 months 12 days
Operating leases, weighted-average remaining lease term	10 years 2 months 12 days	10 years 2 months 12 days
Financing leases, weighted-average incremental borrowing rate	3.60%	3.50%
Operating leases, weighted-average incremental borrowing rate	4.20%	4.10%