Gain (Loss) Reclassified From AOCI for Commodity Contracts (Detail) - USD ($) $ in Thousands		4 Months Ended
		Apr. 24, 2021	Apr. 18, 2020
Accumulated Other Comprehensive Income Loss [Line Items]
Reclassification from AOCI, Gains and losses on cash flow hedges net of tax		$ (220)	$ (411)
Derivative Instruments
Accumulated Other Comprehensive Income Loss [Line Items]
Gross loss reclassified from AOCI into net income	[1]	(294)	(547)
Reclassification from AOCI, Gains and losses on cash flow hedges tax (expense) benefit	[1]	74	136
Reclassification from AOCI, Gains and losses on cash flow hedges net of tax	[1]	(220)	(411)
Commodity Contract | Derivative Instruments
Accumulated Other Comprehensive Income Loss [Line Items]
Gross loss reclassified from AOCI into net income	[1],[2]	(75)	(503)
Reclassification from AOCI, Gains and losses on cash flow hedges tax (expense) benefit		19	126
Reclassification from AOCI, Gains and losses on cash flow hedges net of tax		$ (56)	$ (377)

[1] Amounts in parentheses indicate debits to determine net income.

[2] Amounts are presented as an adjustment to reconcile net income to net cash provided by operating activities on the Condensed Consolidated Statements of Cash Flows.