Stock-Based Compensation - Summary of the Activity for Stock Option Awards (Details) (Stock options [Member], USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Apr. 28, 2013
Stock options [Member]
Number of Shares
Beginning balance (in shares)	2,579
Options granted (in shares)	195
Options exercised (in shares)	(418)
Options cancelled/forfeited (in shares)	(9)
Ending balance (in shares)	2,347
Exercisable at end of period (in shares)	1,692
Weighted Average Exercise Price (per share)
Beginning balance (in dollars per share)	$ 18.29
Options granted (in dollars per share)	$ 31.31
Options exercised (in dollars per share)	$ 16.65
Options cancelled/forfeited (in dollars per share)	$ 24.53
Ending balance (in dollars per share)	$ 19.64
Exercisable at end of period (in dollars per share)	$ 17.08
Aggregate Intrinsic Value
Beginning balance	$ 29,789
Options exercised	6,915
Ending balance	27,204
Exercisable at end of period	23,893
Aggregate Unrecognized Compensation
Beginning balance	3,817
Ending balance	$ 4,802
Number of Shares Exercisable
Exercisable at beginning of period (in shares)	1,937
Exercisable at end of period (in shares)	1,692
Weighted Average Contractual Term (in years)
Exercisable at end of period	2 years 4 months 6 days