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Supplemental Cash Flow Information (Tables) | 9 Months Ended
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Sep. 30, 2012
Supplemental Cash Flow Information [Abstract] |
Components of supplemental cash flow information |
|  | Nine Months Ended September 30, |
|  | 2012 |  |  | 2011 |
Supplemental non-cash investing and financing activities: |  |  |  |  |  |  |  |
Fair value of warrant liability reclassified to additional paid-in capital |  | $ | 13,973 |  |  | $ | — |
Value exchanged in conversion of preferred stock to common stock |  |  | — |  |  |  | 11,205 |
Value of common stock issued in payment of convertible notes |  |  | — |  |  |  | 5,165 |
Value of common stock issued in payment of preferred stock dividends |  |  | — |  |  |  | 3,254 |
Value of common stock issued in payment of term loan debt |  |  | — |  |  |  | 1,398 |
Equipment acquired through capital leases |  |  | 1,072 |  |  |  | 1,149 |
Supplemental cash payment information: |  |  |  |  |  |  |  |
Interest paid |  | $ | 4,357 |  |  | $ | 7,567 |
Income taxes paid |  |  | 12,158 |  |  |  | 1,070 |

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- Details
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