Stock-based Compensation (Details 1) - Stock Appreciation Rights (SARs) [Member]	3 Months Ended
	May 31, 2016 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments, Number of Shares [Roll Forward]
Outstanding as of February 29, 2016 | shares	312,748
Granted (shares) | shares	0
Exercised (shares) | shares	(10,810)
Forfeited (shares) | shares	0
Outstanding as of May 31, 2016 | shares	301,938
Exercisable as of May 31, 2016 | shares	249,529
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instrument, Weighted Average Grant Date Fair Value [Roll Forward]
Outstanding as of February 29, 2016 | $ / shares	$ 34.23
Granted, Weighted Average Exercise Price (usd per share) | $ / shares	0.00
Exercised, Weighted Average Exercise Price (usd per share) | $ / shares	15.22
Forfeited, Weighted Average Exercise Price (usd per share) | $ / shares	0.00
Outstanding as of May 31, 2016 | $ / shares	34.91
Exercisable as of May 31, 2016 | $ / shares	$ 32.91