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Basis of Presentation and Updates to Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 24, 2019
Accounting Policies [Abstract]
Leases	Leases The Company leases certain retail store and supply chain center locations, supply chain vehicles and its corporate headquarters. The Company determines whether an arrangement is or contains a lease at contract inception. The majority of the Company’s leases are classified as operating leases, which are included in operating lease right-of-use (“ROU”) assets and operating lease liabilities in the Company’s condensed consolidated balance sheet. Finance leases are included in property and equipment, current portion of long-term debt and long-term debt on the Company’s condensed consolidated balance sheet. ROU assets and lease liabilities are recognized based on the present value of the future minimum lease payments over the lease term at the commencement date for leases exceeding 12 months. Minimum lease payments include only the fixed lease component of the agreement, as well as any variable rate payments that depend on an index, initially measured using the index at the lease commencement date. Lease terms may include options to renew when it is reasonably certain that the Company will exercise that option. The Company estimates its incremental borrowing rate for each lease using a portfolio approach based on the respective weighted average term of the agreements. This estimation considers the market rates of the Company’s outstanding collateralized borrowings and interpolations of rates outside of the terms of the outstanding borrowings, including comparisons to comparable borrowings of similarly-rated companies with longer term borrowings. Operating lease expense is recognized on a straight-line basis over the lease term and is included in cost of sales or general and administrative expense. Amortization expense for finance leases is recognized on a straight-line basis over the lease term and is included in cost of sales or general and administrative expense, while interest expense for finance leases is recognized using the effective interest method. Variable lease payments that do not depend on a rate or index, payments associated with non-lease components and short-term rentals (leases with terms less than 12 months) are expensed as incurred.