SIGNIFICANT ACCOUNTING POLICIES (Details 7)	12 Months Ended
Jul. 29, 2017 Plan
Equity plans
Number of employee compensation plans (in plans)	4
Stock options
Equity plans
Graded vesting period for employees	4 years
Vesting period for Board of Directors (in years)	6 months
Portion of share-based awards with immediate vesting for Board of Directors	50.00%
Restricted stock awards and units
Equity plans
Graded vesting period for employees	4 years
Vesting period for Board of Directors (in years)	6 months
Portion of share-based awards with immediate vesting for Board of Directors	50.00%

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- Definition

Description of the period of time over which a non-employee director's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, which may be expressed in a variety of ways (for example, in years, month and year).

+ References

No definition available.

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- Definition

Represents the portion of awards granted to nonemployee directors that vests immediately.

+ References

No definition available.

+ Details

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

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.

+ References

No definition available.

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