|
Nonvested Share-Awards Activity (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified |
3 Months Ended |
|---|---|
|
Mar. 31, 2015
|
|
| Nonvested Stock Awards, shares | |
| Nonvested at beginning of period, shares | 343 |
| Awarded | 81 |
| Released | (29) |
| Forfeited | (11) |
| Nonvested at end of period, shares | 384 |
| Weighted Average Grant Date Fair Value | |
| Nonvested at beginning of period | $ 27.99 |
| Awarded | $ 37.22 |
| Released | $ 34.78 |
| Forfeited | $ 24.14 |
| Nonvested at end of period | $ 29.57 |