Loss Reclassified From AOCI for Commodity Contracts (Detail) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Oct. 05, 2019	Oct. 06, 2018	Oct. 05, 2019	Oct. 06, 2018
Accumulated Other Comprehensive Income Loss [Line Items]
Net of tax		$ 259	$ 266	$ (2,864)	$ 689
Cash Flow Hedge Items
Accumulated Other Comprehensive Income Loss [Line Items]
Gross (gain) loss reclassified from AOCI into income	[1]	346	356	(3,832)	921
Tax expense (benefit)	[1]	(87)	(90)	968	(232)
Net of tax	[1]	259	266	(2,864)	689
Commodity Contract | Cash Flow Hedge Items
Accumulated Other Comprehensive Income Loss [Line Items]
Gross (gain) loss reclassified from AOCI into income	[1],[2]	$ 313	$ 323	(3,942)	811
Tax expense (benefit)				995	(205)
Net of tax				$ (2,947)	$ 606

[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.