Stock-Based Compensation (Summary Of Weighted Average Remaining Contractual Life And The Weighted Average Exercise Prices For Stock Options Both Outstanding And Exercisable) (Details) - Stock Options [Member] shares in Thousands	9 Months Ended
	Oct. 31, 2015 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding and exercisable, Number of shares | shares	381
Options outstanding and exercisable, Remaining life	8 months 19 days
Options outstanding and exercisable, Exercise price (in dollars per share)	$ 7.27
Exercise price range, lower range limit (in dollars per share)	6.08
Exercise price range, upper range limit (in dollars per share)	$ 8.19
$6.08 to $6.86 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding and exercisable, Number of shares | shares	15
Options outstanding and exercisable, Remaining life	5 months 26 days
Options outstanding and exercisable, Exercise price (in dollars per share)	$ 6.32
Exercise price range, lower range limit (in dollars per share)	6.08
Exercise price range, upper range limit (in dollars per share)	$ 6.86
$6.89 to $6.89 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding and exercisable, Number of shares | shares	76
Options outstanding and exercisable, Remaining life	6 months 14 days
Options outstanding and exercisable, Exercise price (in dollars per share)	$ 6.89
Exercise price range, lower range limit (in dollars per share)	6.89
Exercise price range, upper range limit (in dollars per share)	$ 6.89
$6.95 to $6.95 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding and exercisable, Number of shares | shares	156
Options outstanding and exercisable, Remaining life	4 months 13 days
Options outstanding and exercisable, Exercise price (in dollars per share)	$ 6.95
Exercise price range, lower range limit (in dollars per share)	6.95
Exercise price range, upper range limit (in dollars per share)	$ 6.95
$7.04 to $7.66 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding and exercisable, Number of shares | shares	37
Options outstanding and exercisable, Remaining life	5 months 15 days
Options outstanding and exercisable, Exercise price (in dollars per share)	$ 7.30
Exercise price range, lower range limit (in dollars per share)	7.04
Exercise price range, upper range limit (in dollars per share)	$ 7.66
$8.19 to $8.19 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding and exercisable, Number of shares | shares	97
Options outstanding and exercisable, Remaining life	1 year 6 months 21 days
Options outstanding and exercisable, Exercise price (in dollars per share)	$ 8.19
Exercise price range, lower range limit (in dollars per share)	8.19
Exercise price range, upper range limit (in dollars per share)	$ 8.19