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Revenue - Additional Information (Detail)	6 Months Ended
	Jul. 14, 2018 USD ($) Commissary	Dec. 30, 2017 USD ($)
Disaggregation Of Revenue [Line Items]
Revenue recognition performance obligation on international shipments	$ 0
Revenue recognition performance obligation	$ 0
Revenue, performance obligation, description of good or service	The Company does not receive pre-payment from its customers, or enter into commitments to provide goods or services that have terms greater than one year
Revenue recognition payment terms	30 days
Contract assets	$ 0	$ 0
Minimum [Member]
Disaggregation Of Revenue [Line Items]
Percentage of revenues recognized at a point in time	99.00%
Revenue recognition contract terms	1 year
Maximum [Member]
Disaggregation Of Revenue [Line Items]
Revenue performance obligation contract expected term	1 year
Expected amortization period of asset	1 year
Manufacturers/brokers supplying DeCA [Member]
Disaggregation Of Revenue [Line Items]
Number of commissaries | Commissary	237

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
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