Stock-based Compensation (Details 1) (Stock Appreciation Rights SARS and Stock Option [Member], USD $)	9 Months Ended
	Nov. 30, 2012
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 29, 2012 (shares)	573,000
Granted (shares)	118,107
Exercised (shares)	(251,240)
Forfeited (shares)	0.00
Outstanding as of November 30, 2012 (shares)	439,867
Exercisable as of November 30, 2012	115,399
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instrument, Weighted Average Grant Date Fair Value [Roll Forward]
Outstanding as of February 29, 2012, Weighted Average Exercise Price (usd per share)	$ 15.46
Granted, Weighted Average Exercise Price (usd per share)	$ 25.77
Exercised, Weighted Average Exercise Price (usd per share)	$ 13.84
Forfeited, Weighted Average Exercise Price (usd per share)	$ 0.00
Outstanding at end of the period ended November 30, 2012, Weighted Average Exercise Price (usd per share)	$ 19.12
Exercisable at end of period ended November 30, 2012, Weighted Average Exercise Price (usd per share)	$ 13.14
Weighted average fair value of options and SARs granted during the period ended November 30, 2012 (usd per share)	$ 8.81