Share-Based Compensation (Schedule Of Stock Option Activity Under Plan) (Details) - $ / shares	9 Months Ended	12 Months Ended
	Oct. 29, 2016	Jan. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock Option Maximum Term	10 years
Stock Option Vesting Period	4 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Options outstanding, Balance (shares)	1,088,674
Options outstanding, Granted (shares)	51,611
Options outstanding, Forfeited (shares)	(33,364)
Options outstanding, Exercised (shares)	(208,821)
Options outstanding, Balance (shares)	898,100	1,088,674
Options outstanding, Exercisable (shares)	532,191
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Weighted average exercise price, Balance (dollars per share)	$ 26.31
Weighted average exercise price, Granted (dollars per share)	39.30
Weighted average exercise price, Forfeited (dollars per share)	37.16
Weighted average exercise price, Exercised (dollars per share)	13.09
Weighted average exercise price, Balance (dollars per share)	29.73	$ 26.31
Weighted average exercise price, Exercisable (dollars per share)	$ 26.45
Weighted Average Remaining Contractual Term (in years)	6 years 11 months 5 days	7 years 6 months
Weighted average remaining contractual term, Exercisable	6 years 2 months