Stock Compensation - SARs and Option Awards Activity (Details) - Stock Appreciation Rights (SARs) [Member] - $ / shares	12 Months Ended
	Feb. 29, 2016	Feb. 28, 2015	Feb. 28, 2014	Feb. 28, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments, Number of Shares [Roll Forward]
Outstanding at beginning of year (shares)	376,982		396,174
Granted (shares)	0	126,532	116,032
Exercised (shares)	(59,441)	(98,942)	(159,721)
Forfeited (shares)	(4,793)	(46,782)	0
Outstanding at end of year (shares)	312,748	376,982
Exercisable at end of year (shares)	217,961	204,107		153,343
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)	$ 31.27		$ 26.64
Granted, Weighted Average Exercise Price (usd per share)	0.00	$ 43.92	45.20
Exercised, Weighted Average Exercise Price (usd per share)	14.67	22.79	19.19
Forfeited, Weighted Average Exercise Price (usd per share)	44.56	44.14	$ 0.00
Outstanding at end of year, Weighted Average Exercise Price (usd per share)	34.23	31.27
Exercisable at end of year, Weighted Average Exercise Price (usd per share)	29.83	21.55		$ 15.32
Weighted average fair value for the fiscal year indicated of options and SARs granted during such year (usd per share)	$ 0.00	$ 16.94		$ 13.68