5. Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Oct. 26, 2013	Oct. 26, 2013
Details
Total Income Tax Expense On Unrecognized Tax Benefits and Interest and Penalties For Prior Year	$ 10,052
Income Tax Expense Related To Unrecognized Tax Benefit For Prior Year	4,933
Federal Benefit on Unrecognized Tax Benefit For Prior Year	2,656
Income Tax Expense Related To Interest and Penalties For Prior Year	5,119
Federal Benefit on Tax Interest and Penalties For Prior Year	2,078
Unrecognized Tax Benefits, Interest on Income Taxes Expense		$ 8,387