Stock-Based Awards (Tables)

12 Months Ended

Jul. 25, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Stock-based Compensation Expense and Related Tax Benefit Recognized

Stock-based compensation expense and the related tax benefit recognized and realized related to stock options and restricted share units during fiscal 2015, 2014, and 2013 were as follows:

	Fiscal Year Ended
	2015		2014		2013
	(Dollars in thousands)
Stock-based compensation	$	13,923	$	12,596	$	9,902
Tax benefit recognized in the statement of operations	$	5,458	$	4,819	$	3,782
Cash tax benefit realized from option exercises and stock vestings	$	13,976	$	7,116	$	3,428

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

The following table summarizes the valuation of stock options and restricted share units granted during fiscal 2015, 2014, and 2013 and the significant valuation assumptions:

	Fiscal Year Ended
	2015			2014			2013
Weighted average fair value of RSUs granted	$	31.42		$	27.54		$	18.52
Weighted average fair value of Performance RSUs granted	$	31.03		$	27.66		$	18.08
Weighted average fair value of stock options granted	$	19.48		$	17.43		$	11.66
Stock option assumptions:
Risk-free interest rate	2.1		%	2.7		%	1.6		%
Expected life (years)	8.8			8.8			9.3
Expected volatility	54.5		%	55.1		%	55.4		%
Expected dividends	—			—			—

Schedule of Share-based Compensation, Stock Options Award Activity

The following table summarizes stock option award activity during fiscal 2015:

	Stock Options
	Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Life	Aggregate Intrinsic Value
					(In years)	(In thousands)
Outstanding as of July 26, 2014	2,044,893		$	18.68
Granted	90,686		$	31.46
Options exercised	(735,330	)	$	12.13
Forfeited or canceled	(484,926	)	$	34.44
Outstanding as of July 25, 2015	915,323		$	16.86	6.0	$	43,052
Exercisable options as of July 25, 2015	657,055		$	13.46	5.1	$	33,139

Schedule of Share-based Compensation, RSU and Performance RSU Activity

The following table summarizes RSU and Performance RSU activity during fiscal 2015:

	Restricted Stock
	RSUs						Performance RSUs
	Share Units		Weighted Average Grant Price		Aggregate Intrinsic Value		Share Units		Weighted Average Grant Price		Aggregate Intrinsic Value
					(In thousands)						(In thousands)
Outstanding as of July 26, 2014	398,931		$	20.61			1,190,184		$	21.73
Granted	102,307		$	31.42			416,987		$	31.03
Share units vested	(153,140	)	$	19.96			(318,969	)	$	21.61
Forfeited or canceled	(26,090	)	$	19.32			(342,662	)	$	20.11
Outstanding as of July 25, 2015	322,008		$	24.46	$	20,576	945,540		$	26.46	$	60,420