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Supplemental Cash Flow Information (Tables) | 12 Months Ended
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Dec. 31, 2013
Supplemental Cash Flow Elements [Abstract] |
Components of supplemental cash flow information | Supplemental cash flow information is as follows (in thousands):
| Year ended December 31,
| 2013 |  | 2012 |  | 2011
Supplemental non-cash investing and financing activities: |  |  |  |  |
Value of shares issued in acquisition of Florida Chemical | $ | 52,711 |  |  | $ | — |  |  | $ | — |
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 | 754 |  |  | 1,263 |  |  | 1,334 |
Exercise of stock options by common stock surrender | 3,907 |  |  | — |  |  | — |
Supplemental cash payment information: |  |  |  |  |
Interest paid | $ | 1,859 |  |  | $ | 5,521 |  |  | $ | 7,627 |
Income taxes paid (refunded) | 17,783 |  |  | 14,049 |  |  | (904 | )

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