Stock-Based Awards - Tax Benefit Recognized (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Apr. 26, 2014	Apr. 27, 2013	Apr. 26, 2014	Apr. 27, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-based compensation	$ 2,671	$ 2,513	$ 9,721	$ 7,275
Tax (benefit) recognized in the statement of operations	$ (1,071)	$ (931)	$ (3,736)	$ (2,779)