Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Per Share data | Sep. 30, 2011 | Dec. 31, 2010 |
|---|---|---|
| Preferred stock, par value (in dollars per share) | $ 0.001 | $ 0.001 |
| Preferred stock, shares authorized | 60,000 | 60,000 |
| Preferred stock, Series A, shares designated | 30,500 | |
| Preferred stock, Series A, shares issued | 30,134 | |
| Preferred stock, Series A, shares outstanding | 29,867 | |
| Preferred stock, Series A, shares held in treasury | 267 | |
| Common stock, par value (in dollars per share) | $ 0.001 | $ 0.001 |
| Common stock, shares authorized | 150,000 | 150,000 |
Class A Common Stock | ||
| Common stock, shares issued | 91,927 | 59,968 |
| Common stock, shares outstanding | 91,158 | 59,199 |
| Common stock, Class A, shares held in treasury | 769 | 769 |
Class B Common Stock | ||
| Common stock, shares issued | 13,782 | 28,169 |
| Common stock, shares outstanding | 13,782 | 28,169 |