|
Stock-Based Compensation (Restricted Stock Unit Activity) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
|
3 Months Ended |
|
Mar. 31, 2015
|
| Restricted Stock Units (RSUs) [Member] |
|
| Number of Shares |
|
| Outstanding at December 31, 2014 (shares) |
2,513 |
| Granted (shares) |
835 |
| Released (shares) |
(167) |
| Forfeited (shares) |
(129) |
| Outstanding at March 31, 2015 (shares) |
3,052 |
| Weighted- Average Grant Date Fair Value |
|
| Outstanding at December 31, 2014 (usd per share) |
$ 0.00 |
| Awarded (usd per share) |
$ 42.50 |
| Released (usd per share) |
$ 40.30 |
| Forfeited (usd per share) |
$ 37.60 |
| Outstanding at March 31, 2015 (usd per share) |
$ 0.00 |
| Future Performance Period (3 years) [Member] | Performance Shares [Member] |
|
| Weighted- Average Grant Date Fair Value |
|
| Outstanding at March 31, 2015 (usd per share) |
$ 46.93 |
| Award vesting period |
3 years |
| Current Performance Period [Member] | Performance Shares [Member] |
|
| Weighted- Average Grant Date Fair Value |
|
| Outstanding at March 31, 2015 (usd per share) |
$ 43.06 |
| Award vesting period |
4 years |