Share-Based Compensation (Schedule Of Stock Option Activity Under Plan) (Details) - $ / shares	3 Months Ended
	Apr. 30, 2016	May. 02, 2015
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)	(11,250)
Options outstanding, Exercised (shares)	(88,654)
Options outstanding, Balance (shares)	1,040,381
Options outstanding, Exercisable (shares)	508,272
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)	38.06
Weighted average exercise price, Exercised (dollars per share)	12.70
Weighted average exercise price, Balance (dollars per share)	27.99
Weighted average exercise price, Exercisable (dollars per share)	$ 20.25
Weighted Average Remaining Contractual Term (in years)	7 years 2 months 18 days	7 years 6 months
Weighted average remaining contractual term, Exercisable	6 years 3 months 18 days