|
Consolidated Balance Sheets (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified |
Dec. 31, 2011
|
Dec. 31, 2010
|
|---|---|---|
| Consolidated Balance Sheets [Abstract] | ||
| Allowance for doubtful accounts | $ 2,697 | $ 2,790 |
| Preferred stock, par value per share | $ 0.01 | $ 0.01 |
| Preferred stock, shares authorized | 5,000,000 | 5,000,000 |
| Preferred stock, shares outstanding at liquidation preference | 0 | 10,000 |
| Common stock, par value per share | $ 0.01 | $ 0.01 |
| Common stock, shares authorized | 190,000,000 | 190,000,000 |
| Common stock, shares outstanding | 87,799,479 | 79,605,474 |