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Supplemental Cash Flow Information | 12 Months Ended
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Dec. 31, 2012
Supplemental Cash Flow Elements [Abstract] |
Supplemental Cash Flow Information | Supplemental Cash Flow Information Supplemental cash flow information is as follows (in thousands):
| Year ended December 31,
| 2012 |  | 2011 |  | 2010
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 |  |  | 4,795 |
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 | 1,263 |  |  | 1,334 |  |  | 615 |
Value of common stock issued in payment of debt issuance costs | — |  |  | — |  |  | 5,096 |
Reduction in convertible debt upon note exchange | — |  |  | — |  |  | 1,996 |
Value of common stock issued in exchange for convertible notes | — |  |  | — |  |  | 1,992 |
Debt related commitment fees included in accrued liabilities | — |  |  | — |  |  | 1,000 |
Exercise of stock options by common stock surrender | — |  |  | — |  |  | 111 |
Supplemental cash payment information: |  |  |  |  |
Interest paid | $ | 5,521 |  |  | $ | 7,627 |  |  | $ | 10,901 |
Income taxes paid (refunded) | 14,049 |  |  | (904 | ) |  | (6,186 | )

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- Definition The entire disclosure for supplemental cash flow activities, including cash, noncash, and part noncash transactions, for the period. Noncash is defined as information about all investing and financing activities of an enterprise during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4313-108586 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 32 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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