|
Stock-Based Compensation (Summary Of Options Outstanding) (Details) (USD $)
|
12 Months Ended |
|---|---|
|
Mar. 31, 2013
|
|
| Number Outstanding | 49,000 |
| Weighted Average Exercise Price | $ 30.27 |
| Weighted Remaining Contractual Life (years) | 4 years 7 months 6 days |
|
Range One [Member]
|
|
| Ranges of Exercise Prices, Lower Limit | $ 15.08 |
| Ranges of Exercise Prices, Upper Limit | $ 16.33 |
| Number Outstanding | 27,000 |
| Weighted Average Exercise Price | $ 16.24 |
| Weighted Remaining Contractual Life (years) | 2 years 9 months 18 days |
|
Range Two [Member]
|
|
| Ranges of Exercise Prices, Lower Limit | $ 31.27 |
| Ranges of Exercise Prices, Upper Limit | $ 42.45 |
| Number Outstanding | 9,000 |
| Weighted Average Exercise Price | $ 37.00 |
| Weighted Remaining Contractual Life (years) | 6 years |
|
Range Three [Member]
|
|
| Ranges of Exercise Prices, Lower Limit | $ 51.04 |
| Ranges of Exercise Prices, Upper Limit | $ 58.27 |
| Number Outstanding | 13,000 |
| Weighted Average Exercise Price | $ 54.76 |
| Weighted Remaining Contractual Life (years) | 7 years 6 months |