Stock-based Compensation (Details 1) (Stock Appreciation Rights SARS and Stock Option [Member], USD $)	6 Months Ended
	Aug. 31, 2014
Stock Appreciation Rights SARS and Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments, Number of Shares [Roll Forward]
Outstanding as of February 28, 2014	396,174
Granted (shares)	120,963
Exercised (shares)	(82,249)
Forfeited (shares)	(13,661)
Outstanding as of August 31, 2014	421,227
Exercisable as of August 31, 2014	213,947
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instrument, Weighted Average Grant Date Fair Value [Roll Forward]
Outstanding as of February 28, 2014	$ 26.64
Granted, Weighted Average Exercise Price (usd per share)	$ 43.92
Exercised, Weighted Average Exercise Price (usd per share)	$ 22.80
Forfeited, Weighted Average Exercise Price (usd per share)	$ 43.35
Outstanding as of August 31, 2014	$ 31.81
Exercisable as of August 31, 2014	$ 21.33
Weighted average fair value of options and SARs granted during the period ended August 31, 2014	$ 43.92