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COMMITMENTS and CONTINGENCIES (Details) | 3 Months Ended | 12 Months Ended | 93 Months Ended
--- | --- | --- | ---
Jul. 25, 2020 USD ($) | Oct. 27, 2018 USD ($) | Jul. 25, 2020 union | Jul. 25, 2020 USD ($)
Commitments and Contingencies Disclosure [Abstract] |  |  |  |
Insurance recoveries | $ | $ 2,733,000 | $ 415 |  | $ 6,730
Concentration Risk [Line Items] |  |  |  |
Number of unions | union |  |  | 7 |
Expiration period of union contracts |  |  | 1 year |
Labor Force Concentration Risk | Workforce Subject to Collective Bargaining Arrangements |  |  |  |
Concentration Risk [Line Items] |  |  |  |
Percentage of employees covered by collective bargaining agreements, significant |  |  | 90.00% |
Unionized Employees Concentration Risk | Workforce Subject to Collective Bargaining Arrangements Expired or Expiring within One Year |  |  |  |
Concentration Risk [Line Items] |  |  |  |
Percentage of employees covered by collective bargaining agreements, insignificant |  |  | 31.00% |

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