CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive (Loss) Income	Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Treasury Stock, Common, Value	$ 0
Beginning Balance (shares) at Jul. 29, 2017	50,622,000	50,622,000
Beginning Balance at Jul. 29, 2017	$ 1,681,921	$ 506	$ 460,011	$ (13,963)	$ 1,235,367
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative effect of change in accounting principle					(805)
Stock option exercises and restricted stock vestings, net of tax		341,000
Stock option exercises and restricted stock vestings, net of tax	(4,238)	$ 3	(4,241)
Share-based compensation	$ 7,275		7,275
Treasury Stock, Shares, Acquired	162,073
Treasury Stock, Value, Acquired, Cost Method	$ (6,449)
Adjustments to Additional Paid in Capital, Other	107
Fair value of swap agreements, net of tax	664			664
Foreign currency translation adjustments	(2,206)			(2,206)
Net income	$ 30,505				30,505
Ending Balance (shares) at Oct. 28, 2017	50,801,000	50,963,000
Ending Balance at Oct. 28, 2017	$ 1,708,088	$ 509	$ 464,466	$ (15,505)	$ 1,265,067
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Treasury Stock, Common, Value	$ (6,449)