CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY - 9 months ended Apr. 30, 2016 - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid in Capital	Accumulated Other Comprehensive Loss	Retained Earnings
Beginning Balance (shares) at Aug. 01, 2015	50,096	50,096
Beginning Balance at Aug. 01, 2015	$ 1,385,533	$ 501	$ 420,584	$ (19,443)	$ 983,891
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock option exercises and restricted stock vestings, net of tax		284
Stock option exercises and restricted stock vestings, net of tax	308	$ 3	305
Share-based compensation	12,665		12,665
Other	67		67
Tax deficit associated with stock plans	(48)		(48)
Fair value of swap agreements, net of tax	(2,089)			(2,089)
Foreign currency translation adjustments	2,898			2,898
Net income	$ 91,085				91,085
Ending Balance (shares) at Apr. 30, 2016	50,380	50,380
Ending Balance at Apr. 30, 2016	$ 1,490,419	$ 504	$ 433,573	$ (18,634)	$ 1,074,976