Note 5 - Income Taxes: Schedule of Unrecognized Tax Benefits Roll Forward (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Jul. 27, 2013	Jul. 28, 2012
Details
Unrecognized Tax Benefits, Beginning Balance	$ 14,895	$ 12,476
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions	2,745	2,419
Unrecognized Tax Benefits, Ending Balance	$ 17,640	$ 14,895

Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Unrecognized Tax Benefit

-URI http://asc.fasb.org/extlink&oid=6527854

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15A

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319

Name:	us-gaap_UnrecognizedTaxBenefits
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant