Description Of Rights And Privileges Of Capital Stock-Capital Structure Consists Of Common Stock (Details)		12 Months Ended
Jul. 25, 2014 shares	May. 30, 2015
Schedule of Stockholders Equity [Line Items]
Stock split ratio		2
Common Stock [Member]
Schedule of Stockholders Equity [Line Items]
Additional shares authorized	60,000,000
Class A Common Stock [Member]
Schedule of Stockholders Equity [Line Items]
Additional shares authorized	2,400,000

Change in number of shares issued and outstanding as a result of capital structure change to a stock dividend, stock split or reserve split occurring after the balance sheet date but prior to the later of the issuance of financial statements or the effective date of registration statement.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 4

-Subparagraph (SAB TOPIC 4.C)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187143-122770

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 4

-Section C

Name:	us-gaap_StockholdersEquityNoteChangesInCapitalStructureSubsequentChangesToNumberOfCommonShares
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration