Stock Based Compensation (Schedule Of Restricted Stock Units Activity) (Details)	3 Months Ended
	Apr. 30, 2014	Jan. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share Based Compensation Arrangement By Share Based Payment Award Options And Stock Settled SAR Outstanding Number	87,944	329,788
Stock Issued During Period Shares Stock Options And SARs Exercised	241,844
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Shares, Outstanding at January 31, 2014	284,204
Shares, Granted	428,025
Shares, Vested	(148,522)
Shares, Canceled	(5,579)
Shares, Outstanding at April 30, 2014	558,128