|
Stock-Based Compensation (Stock Option Activity) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
|
12 Months Ended |
|
Dec. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2012
|
Dec. 31, 2011
|
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] |
|
|
|
|
| Balance, beginning of period |
5,490 |
6,412 |
8,280 |
|
| Granted |
403 |
483 |
1,595 |
|
| Exercised |
(388) |
(1,060) |
(3,128) |
|
| Forfeitures and expired |
(337) |
(345) |
(335) |
|
| Balance, end of period |
5,168 |
5,490 |
6,412 |
8,280 |
| Vested and expected to vest |
5,134 |
|
|
|
| Exercisable |
4,070 |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward] |
|
|
|
|
| Balance, beginning of period, weighted-average exercise price (in USD per share) |
$ 14.25 |
$ 14.17 |
$ 7.70 |
|
| Granted, weighted-average exercise price (in USD per share) |
$ 14.35 |
$ 10.23 |
$ 22.59 |
|
| Exercised, weighted-average exercise price (in USD per share) |
$ 8.01 |
$ 9.87 |
$ 0.72 |
|
| Forfeitures, weighted-average exercise price (in USD per share) |
$ 21.43 |
$ 20.65 |
$ 19.79 |
|
| Balance, end of period, weighted-average exercise price (in USD per share) |
$ 14.26 |
$ 14.25 |
$ 14.17 |
$ 7.70 |
| Vested and expected to vest |
$ 14.25 |
|
|
|
| Exercisable |
$ 13.72 |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] |
|
|
|
|
| Balance, weighted-average remaining contractual term |
5 years 8 months 22 days |
6 years 6 months 7 days |
7 years 2 months 14 days |
5 years 10 months 24 days |
| Vested and expected to vest, weighted-average remaining contractual term |
5 years 8 months 14 days |
|
|
|
| Exercisable, weighted-average remaining contractual term |
5 years 1 month 10 days |
|
|
|
| Balance, aggregate intrinsic value |
$ 7,732 |
$ 28,769 |
$ 9,010 |
$ 127,308 |
| Vested and expected to vest, aggregate intrinsic value |
7,720 |
|
|
|
| Exercisable, aggregate intrinsic value |
$ 7,367 |
|
|
|