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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.

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No definition available.

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The increase (decrease) during the reporting period in insurance settlements receivable, which are amounts due in settlement of a claim for reimbursement from an insurance company when the Company has suffered a loss covered under an insurance policy. The expectation is that such reimbursement will be received within one year of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

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The amount recovered from insurance. These recoveries reduce costs and losses that are reported as a separate line item under operating expenses.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.3)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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Amount due in settlement of a claim for reimbursement from an insurance company when the Company has suffered a loss covered under an insurance policy.

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No definition available.

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Percentage of employee participants subject to a collective bargaining arrangement to all of the employer's participants in a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 80
-Section 50
-Paragraph 5
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947

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Multiemployer Plans, Collective-Bargaining Arrangement, Expiration Period

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Number of Unions

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COMMITMENTS and CONTINGENCIES (Details) $ in Thousands	1 Months Ended	3 Months Ended	12 Months Ended	72 Months Ended
COMMITMENTS and CONTINGENCIES (Details) $ in Thousands	Feb. 29, 2016 USD ($)	Oct. 25, 2014 USD ($)	Jul. 28, 2018 union	Jul. 28, 2018 USD ($)	Jul. 27, 2013 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Insurance settlements receivable					$ 4,913
Insurance receivable write-off		$ 2,270
Insurance recoveries	$ 940			$ 3,583
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			89.00%	89.00%
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			19.00%	19.00%