Stock-based Compensation (Details 1) (Stock Appreciation Rights SARS and Stock Option [Member], USD $)	9 Months Ended
	Nov. 30, 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)	126,532
Exercised (shares)	(95,928)
Forfeited (shares)	(24,300)
Outstanding as of November 30, 2014	402,478
Exercisable as of November 30, 2014	198,600
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)	$ 22.79
Forfeited, Weighted Average Exercise Price (usd per share)	$ 43.01
Outstanding as of November 30, 2014	$ 32.00
Exercisable as of November 30, 2014	$ 21.03
Weighted average fair value of options and SARs granted during the period ended November 30, 2014	$ 16.94