Stock Compensation - SARs and Option Awards Activity (Details) - Stock Appreciation Rights (SARs) [Member] - $ / shares	12 Months Ended
	Feb. 28, 2017	Feb. 29, 2016	Feb. 28, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments, Number of Shares [Roll Forward]
Outstanding at beginning of year (shares)	312,748	376,982	396,174
Granted (shares)	0	0	126,532
Exercised (shares)	(141,983)	(59,441)	(98,942)
Forfeited (shares)	(626)	(4,793)	(46,782)
Outstanding at end of year (shares)	170,139	312,748	376,982
Exercisable at end of year (shares)	126,975	217,961	204,107
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)	$ 34.23	$ 31.27	$ 26.64
Granted, Weighted Average Exercise Price (usd per share)	0.00	0.00	43.92
Exercised, Weighted Average Exercise Price (usd per share)	24.85	14.67	22.79
Forfeited, Weighted Average Exercise Price (usd per share)	43.92	44.56	44.14
Outstanding at end of year, Weighted Average Exercise Price (usd per share)	42.02	34.23	31.27
Exercisable at end of year, Weighted Average Exercise Price (usd per share)	41.27	29.83	21.55
Weighted average fair value for the fiscal year indicated of options and SARs granted during such year (usd per share)	$ 0.00	$ 0.00	$ 16.94