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. 02, 2014	$ 1,243,364	$ 498	$ 402,875	$ (14)	$ (5,152)	$ 845,157
Beginning Balance (shares) at Aug. 02, 2014	49,771	49,771
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Issued During Period, Value, Employee Stock Ownership Plan	14			14
Stock option exercises and restricted stock vestings, net of tax		300
Stock option exercises and restricted stock vestings, net of tax	1,039	3	1,036
Share-based compensation	9,554		9,554
Tax benefit associated with stock plans	2,661		2,661
Foreign currency translation adjustments	(11,892)				(11,892)
Net income	60,886					60,886
Ending Balance at Jan. 31, 2015	$ 1,305,626	$ 501	$ 416,126	$ 0	$ (17,044)	$ 906,043
Ending Balance (shares) at Jan. 31, 2015	50,071	50,071