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Restructuring Charges and Asset Impairment - Schedule of Restructuring Charges and Asset Impairment (Detail) - USD ($) $ in Thousands	4 Months Ended
	Apr. 21, 2018	Apr. 22, 2017
Restructuring Cost And Reserve [Line Items]
Asset impairment charges	$ 1,470	$ 521
Loss (gain) on sales of assets related to closed facilities	137	(177)
Provision for severance	125	535
Other costs associated with distribution center and store closings	282	296
Changes in estimates	285
Lease termination adjustments		(559)
Restructuring and asset impairment	6,202	1,021
Business Restructuring Reserves [Member]
Restructuring Cost And Reserve [Line Items]
Provision for closing charges	$ 3,903	$ 405

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Gain loss on lease termination.

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Restructuring reserve revised change in estimates.

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee.

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Amount of restructuring charges, remediation cost, and asset impairment loss.

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Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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