Benefit Plans (Components Of Net Pension Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Feb. 29, 2020	Feb. 28, 2019	Feb. 28, 2018
Defined Benefit Plan Disclosure [Line Items]
Total net pension (benefit) expense	$ (1,107)	$ (207)	$ 675
Total net actuarial loss (1)	68,861	4,560	3,256
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Total net pension (benefit) expense	(1,595)	(681)	207
Total net actuarial loss (1)	67,385	4,478	2,880
Restoration Plan
Defined Benefit Plan Disclosure [Line Items]
Total net pension (benefit) expense	488	474	468
Total net actuarial loss (1)	$ 1,476	$ 82	$ 376