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Fair Value (Details) | 3 Months Ended |  |  |
--- | --- | --- | --- | ---
Nov. 28, 2020 USD ($) | Nov. 30, 2019 USD ($) | Nov. 30, 2020 USD ($) ft² | Sep. 30, 2020 USD ($) | Aug. 29, 2020 USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Fair value remeasurement of non-financial assets on non-recurring basis | $ 0 | $ 0 |  |  |
Fair value remeasurement of non-financial liabilities on non-recurring basis | 0 | $ 0 |  |  |
Prepaid purchase of PPE |  |  |  | $ 26,726,000 |
Ipmairment charge | 26,726,000 |  |  |  |
Property, plant and equipment, net | $ 297,780,000 |  |  |  | $ 301,979,000
Long Island Customer Service Center [Member] |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Area of property | ft² |  |  | 170,000 |  |
Property, plant and equipment, net |  |  | $ 15,200,000 |  |

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