Stock Compensation - SARs and Option Awards Activity (Details) - Stock Appreciation Rights (SARs) [Member] - $ / shares	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017	Feb. 29, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments, Number of Shares [Roll Forward]
Outstanding at beginning of year (shares)	170,139	312,748	376,982
Granted (shares)	0	0	0
Exercised (shares)	(19,481)	(141,983)	(59,441)
Forfeited (shares)	(2,145)	(626)	(4,793)
Outstanding at end of year (shares)	148,513	170,139	312,748
Exercisable at end of year (shares)	148,513	126,975	217,961
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)	$ 42.02	$ 34.23	$ 31.27
Granted, Weighted Average Exercise Price (usd per share)	0.00	0.00	0.00
Exercised, Weighted Average Exercise Price (usd per share)	31.94	24.85	14.67
Forfeited, Weighted Average Exercise Price (usd per share)	45.36	43.92	44.56
Outstanding at end of year, Weighted Average Exercise Price (usd per share)	43.29	42.02	34.23
Exercisable at end of year, Weighted Average Exercise Price (usd per share)	$ 43.29	$ 41.27	$ 29.83