CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (USD $) In Thousands, unless otherwise specified	Total	Common Stock	Additional Paid in Capital	Unallocated Shares of ESOP	Accumulated Other Comprehensive Loss	Retained Earnings
Beginning Balance at Aug. 03, 2013	$ 1,099,146	$ 493	$ 380,109	$ (39)	$ (1,092)	$ 719,675
Beginning Balance (shares) at Aug. 03, 2013	49,330	49,330
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Issued During Period, Value, Employee Stock Ownership Plan	16			16
Stock option exercises and restricted stock vestings, net of tax		320
Stock option exercises and restricted stock vestings, net of tax	(1,584)	4	(1,588)
Share-based compensation	13,137		13,137
Tax benefit associated with stock plans	2,459		2,459
Foreign currency translation adjustments	(4,489)				(4,489)
Net income	92,107					92,107
Ending Balance at May. 03, 2014	$ 1,200,792	$ 497	$ 394,117	$ (23)	$ (5,581)	$ 811,782
Ending Balance (shares) at May. 03, 2014	49,650	49,650