|
Stock Option Activity (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified |
3 Months Ended |
|---|---|
|
Mar. 31, 2015
|
|
| Number of Shares | |
| Options outstanding, beginning of period | 2,649 |
| Granted | 363 |
| Canceled/Expired | (16) |
| Exercised | (1) |
| Options outstanding, end of period | 2,995 |
| Weighted Average Exercise Price | |
| Options outstanding, beginning of period | $ 32.33 |
| Granted | $ 42.80 |
| Canceled/Expired | $ 45.72 |
| Exercised | $ 25.43 |
| Options outstanding, end of period | $ 33.53 |