Stock-Based Compensation - Summarized Information of Stock Options Outstanding (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Jan. 26, 2014
Stock Options Price Range Analysis-Outstanding
Price Range Analysis - Outstanding
Number of Shares	1,935
Weighted Average Exercise Price (in dollars per share)	$ 21.33
Weighted Average Contractual Term	3 years 22 days
Stock Options Price Range Analysis-Outstanding | $1.15 - $4.53
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range - lower range limit (in dollars per share)	$ 1.15
Exercise price range - upper range limit (in dollars per share)	$ 4.53
Price Range Analysis - Outstanding
Number of Shares	9
Weighted Average Exercise Price (in dollars per share)	$ 2.54
Weighted Average Contractual Term	3 years 3 months 4 days
Stock Options Price Range Analysis-Outstanding | $7.97 - $13.76
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range - lower range limit (in dollars per share)	$ 7.97
Exercise price range - upper range limit (in dollars per share)	$ 13.76
Price Range Analysis - Outstanding
Number of Shares	133
Weighted Average Exercise Price (in dollars per share)	$ 11.18
Weighted Average Contractual Term	1 year 3 months 11 days
Stock Options Price Range Analysis-Outstanding | $13.81 - $20.90
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range - lower range limit (in dollars per share)	$ 13.81
Exercise price range - upper range limit (in dollars per share)	$ 20.90
Price Range Analysis - Outstanding
Number of Shares	878
Weighted Average Exercise Price (in dollars per share)	$ 16.52
Weighted Average Contractual Term	1 year 11 months 1 day
Stock Options Price Range Analysis-Outstanding | $21.11 - $32.16
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range - lower range limit (in dollars per share)	$ 21.11
Exercise price range - upper range limit (in dollars per share)	$ 32.16
Price Range Analysis - Outstanding
Number of Shares	830
Weighted Average Exercise Price (in dollars per share)	$ 26.90
Weighted Average Contractual Term	4 years 3 months 22 days
Stock Options Price Range Analysis-Outstanding | $33.22 - $35.17
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range - lower range limit (in dollars per share)	$ 33.22
Exercise price range - upper range limit (in dollars per share)	$ 35.17
Price Range Analysis - Outstanding
Number of Shares	85
Weighted Average Exercise Price (in dollars per share)	$ 34.25
Weighted Average Contractual Term	5 years 3 months 26 days
Stock Options Price Range Analysis-Exercisable
Price Range Analysis - Exercisable
Number of Shares	1,275
Weighted Average Exercise Price (in dollars per share)	$ 17.67
Weighted Average Contractual Term	2 years 2 months 1 day
Stock Options Price Range Analysis-Exercisable | $1.15 - $4.53
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range - lower range limit (in dollars per share)	$ 1.15
Exercise price range - upper range limit (in dollars per share)	$ 4.53
Price Range Analysis - Exercisable
Number of Shares	9
Weighted Average Exercise Price (in dollars per share)	$ 2.54
Weighted Average Contractual Term	3 years 3 months 4 days
Stock Options Price Range Analysis-Exercisable | $7.97 - $13.76
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range - lower range limit (in dollars per share)	$ 7.97
Exercise price range - upper range limit (in dollars per share)	$ 13.76
Price Range Analysis - Exercisable
Number of Shares	133
Weighted Average Exercise Price (in dollars per share)	$ 11.18
Weighted Average Contractual Term	1 year 3 months 11 days
Stock Options Price Range Analysis-Exercisable | $13.81 - $20.90
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range - lower range limit (in dollars per share)	$ 13.81
Exercise price range - upper range limit (in dollars per share)	$ 20.90
Price Range Analysis - Exercisable
Number of Shares	848
Weighted Average Exercise Price (in dollars per share)	$ 16.50
Weighted Average Contractual Term	1 year 10 months 24 days
Stock Options Price Range Analysis-Exercisable | $21.11 - $32.16
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range - lower range limit (in dollars per share)	$ 21.11
Exercise price range - upper range limit (in dollars per share)	$ 32.16
Price Range Analysis - Exercisable
Number of Shares	285
Weighted Average Exercise Price (in dollars per share)	$ 24.70
Weighted Average Contractual Term	3 years 3 months