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Leases - Narrative (Details) $ in Thousands |  |  |  |  |  | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Feb. 28, 2020 USD ($) | Jan. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) warehouse | Jun. 20, 2019 USD ($) | May 19, 2019 USD ($) | Jul. 03, 2021 USD ($) option | Apr. 03, 2021 USD ($) | Jun. 27, 2020 USD ($) | Mar. 28, 2020 USD ($) | Jul. 03, 2021 USD ($) option | Jun. 27, 2020 USD ($) | Jan. 02, 2021 USD ($) | Dec. 28, 2019 | Dec. 29, 2018
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of Options | option |  |  |  |  |  | 1 |  |  |  | 1 |  |  |  |
Number of financing transactions | warehouse |  |  | 2 |  |  |  |  |  |  |  |  |  |  |
Lease renewal term |  |  |  |  |  |  |  |  |  | 5 years |  |  |  |
Finance lease, renewal term |  |  |  |  |  |  |  |  |  |  |  |  |  | 5 years
Finance lease obligations |  |  |  |  |  | $ 279,196 |  |  |  | $ 279,196 |  | $ 273,118 |  |
Proceeds from real estate financing transactions |  |  |  |  |  |  |  |  |  | 0 | $ 78,263 |  |  |
Finance leases |  |  |  |  |  | 338 |  | $ 0 |  | 10,549 | $ 0 |  |  |
Operating lease liability |  |  |  |  |  | 49,833 |  |  |  | 49,833 |  | $ 51,041 |  |
Warehouse faciility |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of financing transactions | warehouse |  |  | 2 |  |  |  |  |  |  |  |  |  |  |
Finance lease, term of contract |  |  |  |  |  |  |  |  |  |  |  |  | 15 years |
Finance lease, renewal term |  |  |  |  |  |  |  |  |  |  |  | 5 years | 5 years |
Finance lease obligations |  |  |  |  |  | $ 80,100 |  |  |  | $ 80,100 |  | $ 82,000 |  |
Proceeds from real estate financing transactions | $ 7,500 | $ 34,100 | $ 27,200 |  |  |  | $ 78,300 |  | $ 45,000 |  |  |  |  |
Warehouse faciility | University Park, IL |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from real estate financing transactions |  |  |  |  | $ 21,800 |  |  |  |  |  |  |  |  |
Warehouse faciility | Yulee, FL |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from real estate financing transactions |  |  |  | $ 13,300 |  |  |  |  |  |  |  |  |  |
Warehouse faciility | Milwaukee, WI And Statesville, NC |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of renewal options | option |  |  |  |  |  | 2 |  |  |  | 2 |  |  |  |
Operating lease liability |  |  |  |  |  | $ 5,000 |  |  |  | $ 5,000 |  |  |  |
Operating lease, term of contract |  |  |  |  |  | 10 years |  |  |  | 10 years |  |  |  |
Operating lease, renewal term |  |  |  |  |  | 5 years |  |  |  | 5 years |  |  |  |
Transportation Equipment |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Finance lease, term of contract |  |  |  |  |  | 4 years | 4 years |  |  | 4 years |  |  |  |
Finance lease obligations |  |  |  |  |  | $ 300 | $ 10,200 |  |  | $ 300 |  |  |  |
Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease term |  |  |  |  |  |  |  |  |  | 1 year |  |  |  |
Finance lease, renewal term |  |  |  |  |  |  |  |  |  |  |  |  |  | 10 years
Minimum | Warehouse faciility |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Finance lease, term of contract |  |  |  |  |  |  |  |  |  |  |  | 15 years |  |
Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease term |  |  |  |  |  |  |  |  |  | 15 years |  |  |  |
Finance lease, term of contract |  |  |  |  |  |  |  |  |  |  |  |  |  | 15 years
Maximum | Warehouse faciility |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Finance lease, term of contract |  |  |  |  |  |  |  |  |  |  |  | 18 years |  |

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