SIGNIFICANT ACCOUNTING POLICIES (Details 7)	12 Months Ended
Jul. 28, 2012 Y
Equity plans
Number of employee compensation plans (in plans)	3
Stock options
Equity plans
Vesting period for employees	4 years
Vesting period for Board of Directors (in years)	2
Portion of share-based awards with immediate vesting for Board of Directors	0.333
Restricted stock awards and units
Equity plans
Vesting period for employees	4 years
Vesting period for Board of Directors (in years)	2
Portion of share-based awards with immediate vesting for Board of Directors	0.333

Description of the period of time over 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, which may be expressed in a variety of ways (for example, in years, month and year).

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph a

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: 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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Data Type:	us-types:durationStringItemType
Balance Type:	na
Period Type:	duration