|
Share-based Compensation (Details 2) (USD $)
|
3 Months Ended |
|
Mar. 31, 2013
|
Mar. 31, 2012
|
| Restricted Stock information |
|
|
| Recognized compensation costs (in dollars) |
$ 3,218,000 |
$ 4,471,000 |
| Unrecognized compensation costs related to unvested options and RSUs (in dollars) |
24,700,000 |
|
| Weighted average remaining vesting period for recognition of compensation costs |
2 years 8 months 12 days |
|
|
Restricted Stock Units
|
|
|
| Restricted Stock information |
|
|
| Restricted stock units (RSUs) granted in period (in shares) |
644,677 |
|
| Fair value of restricted stock granted during the period (in dollars) |
4,100,000 |
|
| Vesting period |
3 years |
|
| Vesting subject to the grantees continued employment or providing service and reduction if the aggregate fair value of each grant exceeds a specified percentage of our Adjusted EBITDA (in shares) |
212,384 |
|
| Vesting subject to the grantees continued employment or providing service and certain revenue and Adjusted EBITDA growth targets (in shares) |
432,293 |
|
|
Restricted Stock Units | Director
|
|
|
| Restricted Stock information |
|
|
| Restricted stock units (RSUs) granted in period (in shares) |
84,622 |
|
| Fair value of restricted stock granted during the period (in dollars) |
$ 600,000 |
|
|
Restricted Stock Units | Director | Minimum
|
|
|
| Restricted Stock information |
|
|
| Vesting period |
1 year |
|
|
Restricted Stock Units | Director | Maximum
|
|
|
| Restricted Stock information |
|
|
| Vesting period |
3 years |
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