Loss Reclassified From AOCI for Commodity Contracts (Detail) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Oct. 07, 2017	Oct. 08, 2016	Oct. 07, 2017	Oct. 08, 2016
Accumulated Other Comprehensive Income Loss [Line Items]
Net of tax		$ 372	$ 742	$ 1,166	$ 2,688
Gains/Losses on Cash Flow Hedges
Accumulated Other Comprehensive Income Loss [Line Items]
Gross loss reclassified from AOCI into income	[1]	604	1,206	1,895	4,371
Tax benefit	[1]	(232)	(464)	(729)	(1,683)
Net of tax	[1]	372	742	1,166	2,688
Commodity Contract | Gains/Losses on Cash Flow Hedges
Accumulated Other Comprehensive Income Loss [Line Items]
Gross loss reclassified from AOCI into income	[1],[2]	$ 571	$ 1,144	1,785	4,174
Tax benefit				(687)	(1,607)
Net of tax				$ 1,098	$ 2,567

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

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