Benefit Plans (Components Of Net Pension Expense) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Feb. 28, 2014	Feb. 28, 2013	Feb. 29, 2012
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 8,016	$ 7,757	$ 7,348
Expected return on plan assets	(7,916)	(7,591)	(6,870)
Recognized actuarial loss	1,674	1,200	461
Net pension expense	1,774	1,366	939
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	7,583	7,299	6,830
Expected return on plan assets	(7,916)	(7,591)	(6,870)
Recognized actuarial loss	1,674	1,200	461
Net pension expense	1,341	908	421
Restoration Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	433	458	518
Expected return on plan assets	0	0	0
Recognized actuarial loss	0	0	0
Net pension expense	$ 433	$ 458	$ 518