Summary of Significant Accounting Policies (Details) ft² in Thousands |
12 Months Ended | |||
|---|---|---|---|---|
Apr. 24, 2017 |
Dec. 28, 2017
ft²
state
segment
facility
|
Dec. 29, 2016 |
Dec. 31, 2015 |
|
| Real Estate Properties [Line Items] | ||||
| Number of reportable segments | segment | 1 | |||
| Number of states with facilities | state | 21 | |||
| Number of distribution centers | 4 | |||
| Fiscal year period | 364 days | 364 days | 371 days | |
| Fiscal quarter period | 91 days | |||
| Stock split conversion ratio | 321.820 | |||
| Minimum | ||||
| Real Estate Properties [Line Items] | ||||
| Fiscal year period | 364 days | |||
| Maximum | ||||
| Real Estate Properties [Line Items] | ||||
| Fiscal year period | 371 days | |||
| Warehouse Format Store [Member] | ||||
| Real Estate Properties [Line Items] | ||||
| Number of stores | 83 | |||
| Area of facility | ft² | 73 | |||
| Small Format Store [Member] | ||||
| Real Estate Properties [Line Items] | ||||
| Number of stores | 1 | |||
| X | ||||||||||
- Definition The length of the fiscal quarter, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available.
|
| X | ||||||||||
- Definition The length of the fiscal year, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available.
|
| X | ||||||||||
- Definition The number of distribution centers owned or operated by the entity. No definition available.
|
| X | ||||||||||
- Definition Area of a real estate property. No definition available.
|
| X | ||||||||||
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. No definition available.
|
| X | ||||||||||
- Definition The number of states the entity operates in as of the balance sheet date. No definition available.
|
| X | ||||||||||
- Definition Represents the number of stores. No definition available.
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Definition Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|