Benefit Plans (Components Of Net Pension Expense) (Details) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
May. 31, 2015 |
May. 31, 2014 |
|
| Defined Benefit Plan Disclosure [Line Items] | ||
| Interest cost | $ 2,276 | $ 2,121 |
| Expected return on plan assets | (2,465) | (2,267) |
| Recognized actuarial loss | 489 | 340 |
| Net pension expense | 300 | 194 |
| Pension Plan [Member] | ||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Interest cost | 2,168 | 2,008 |
| Expected return on plan assets | (2,465) | (2,267) |
| Recognized actuarial loss | 483 | 340 |
| Net pension expense | 186 | 81 |
| Restoration Plan [Member] | ||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Interest cost | 108 | 113 |
| Expected return on plan assets | 0 | 0 |
| Recognized actuarial loss | 6 | 0 |
| Net pension expense | $ 114 | $ 113 |