Stock Option Activity (Detail) shares in Thousands |
6 Months Ended |
|---|---|
|
Jun. 30, 2017
$ / shares
shares
| |
| Number of Shares | |
| Options outstanding, beginning of period | shares | 3,292 |
| Granted | shares | 398 |
| Canceled/Expired | shares | (225) |
| Exercised | shares | (79) |
| Options outstanding, end of period | shares | 3,386 |
| Weighted Average Exercise Price | |
| Options outstanding, beginning of period | $ / shares | $ 32.06 |
| Granted | $ / shares | 32.55 |
| Canceled/Expired | $ / shares | 29.43 |
| Exercised | $ / shares | 20.88 |
| Options outstanding, end of period | $ / shares | $ 32.55 |