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Assets Held for Sale (Details) $ in Millions | Dec. 29, 2018 USD ($) warehouse property | Dec. 30, 2017 USD ($) property
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Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Number of properties held for sale | 7 | 2
Discontinued operations, held for sale |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Net book value of total assets held for sale | $ | $ 3.1 | $ 0.8
Cedar Creek |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Number of properties held for sale |  | 1
Lubbock, Texas |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Number of properties held for sale | warehouse | 6 |

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