|
Stock-Based Compensation (Details) 1 (USD $)
In Thousands, except Share data, unless otherwise specified |
3 Months Ended | 6 Months Ended | 0 Months Ended | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
|
Jun. 30, 2013
|
Jun. 30, 2012
|
Jun. 30, 2013
|
Jun. 30, 2012
|
Jun. 30, 2012
Common Stock
|
May 16, 2012
Public Offering
|
May 16, 2012
Public Offering
Common Stock
|
Jul. 02, 2012
Catalyst
Common Stock
|
Jun. 30, 2013
LTIP [Member]
|
Jun. 30, 2013
Assumed Plans
|
|
| Stockholders' Equity [Line Items] | ||||||||||
| Shares from public offering | 11,960,000 | 12,000,000 | 66,800,000 | |||||||
| Share price to public | $ 45.30 | |||||||||
| Proceeds from public offering, net of issuance costs | $ 0 | $ 519,260 | $ 519,100 | |||||||
| Warrants issued | 500,000 | |||||||||
| Stock-based compensation | $ 6,500 | $ 4,100 | $ 13,131 | $ 6,853 | ||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | 6,822,705 | 1,136,442 | ||||||||