Note 5 - Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jul. 26, 2014	Jul. 27, 2013	Jul. 28, 2012
Deferred Tax Assets, Valuation Allowance	$ 0	$ 0
Unrecognized Tax Benefits, Ending Balance	28,993	17,640	14,895
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	18,845	11,466
Unrecognized Tax Benefits, Interest on Income Taxes Expense	10,287	1,211	1,008
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	16,107	5,820
Income Tax Expense on Prior Year Tax Positions
Income Tax Examination, Increase (Decrease) in Liability from Prior Year	10,052
Net
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions	4,933
Income Tax Examination, Penalties and Interest Expense	5,119
Federal Benefit
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions	2,656
Income Tax Examination, Penalties and Interest Expense	$ 2,078