Stock Based Compensation (Schedule Of Stock Options Activity) (Details)	9 Months Ended
	Oct. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Shares, Outstanding at January 31, 2013	329,788
Shares, Exercised	(268,279)
Shares, Outstanding at July 31, 2013	61,509