Stock Compensation - SARs and Option Awards Activity (Details) (Stock Appreciation Rights SARS and Stock Option [Member], USD $)	12 Months Ended
	Feb. 28, 2014	Feb. 28, 2013	Feb. 29, 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 at beginning of year (shares)	439,863	573,000	831,518
Granted (shares)	116,032	118,107	193,132
Exercised (shares)	(159,721)	(251,240)	(413,814)
Forfeited (shares)	0	(4)	(37,836)
Outstanding at end of year (shares)	396,174	439,863	573,000
Exercisable at end of year (shares)	153,343	115,395	123,090
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instrument, Weighted Average Grant Date Fair Value [Roll Forward]
Outstanding at beginning of year, Weighted Average Exercise Price (usd per share)	$ 19.12	$ 15.46	$ 14.14
Granted, Weighted Average Exercise Price (usd per share)	$ 45.20	$ 25.77	$ 20.91
Exercised, Weighted Average Exercise Price (usd per share)	$ 19.19	$ 13.84	$ 15.10
Forfeited, Weighted Average Exercise Price (usd per share)	$ 0.00	$ 2.11	$ 19.88
Outstanding at end of year, Weighted Average Exercise Price (usd per share)	$ 26.64	$ 19.12	$ 15.46
Exercisable at end of year, Weighted Average Exercise Price (usd per share)	$ 15.32	$ 13.14	$ 12.11
Weighted average fair value for the fiscal year indicated of options and SARs granted during such year (usd per share)	$ 13.68	$ 8.81	$ 7.74