Stock-Based Compensation - Summary of the Activity for Stock Option Awards (Details) - Jul. 26, 2015 - Stock options [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	Total
Number of Shares
Beginning balance (in shares)	1,763
Options granted (in shares)	184
Options exercised (in shares)	(186)
Options cancelled/forfeited (in shares)	(132)
Ending balance (in shares)	1,629
Exercisable at end of period (in shares)	943
Weighted Average Exercise Price (per share)
Beginning balance (in dollars per share)	$ 23.70
Options granted (in dollars per share)	28.21
Options exercised (in dollars per share)	15.96
Options cancelled/forfeited (in dollars per share)	26.18
Ending balance (in dollars per share)	24.89
Exercisable at end of period (in dollars per share)	$ 23.25
Aggregate Intrinsic Value
Beginning balance	$ 7,722
Options exercised	1,592
Ending balance	552
Exercisable at end of period	552
Aggregate Unrecognized Compensation
Beginning balance	4,688
Ending balance	$ 4,340
Number of Shares Exercisable
Exercisable at beginning of period (in shares)	986
Exercisable at end of period (in shares)	943
Weighted Average Contractual Term (in years)
Exercisable at end of period	2 years 6 months