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Convertible Notes (Tables) | 6 Months Ended
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Jun. 30, 2013
Debt Disclosure [Abstract] |
Schedule of convertible notes | The Company’s convertible notes are shown in the following table:
(In thousands) |  | As of June 30, 2013 |  | As of December 31, 2012
5% Convertible Senior Notes due 2014 (the “2014 Notes”) |  | $ | 172,500 |  |  | $ | 172,500 |
Unamortized discount |  | (17,027 | ) |  | (24,944 | )
Total convertible notes |  | $ | 155,473 |  |  | $ | 147,556 |
Less current portion |  | 155,473 |  |  | — |
Total long-term convertible notes |  | $ | — |  |  | $ | 147,556 |
Schedule of interest expense on notes | Interest expense related to the notes for the three and six months ended June 30, 2013 and 2012 was as follows:
| Three Months Ended |  | Six Months Ended
| June 30, |  | June 30,
| 2013 |  | 2012 |  | 2013 |  | 2012
| (In thousands)
2014 Notes coupon interest at a rate of 5% | $ | 2,156 |  |  | $ | 2,156 |  |  | $ | 4,313 |  |  | $ | 4,313 |
2014 Notes amortization of discount and debt issuance costs at an additional effective interest rate of 11.7% | 4,145 |  |  | 3,557 |  |  | 8,234 |  |  | 7,067 |
Total interest expense on convertible notes | $ | 6,301 |  |  | $ | 5,713 |  |  | $ | 12,547 |  |  | $ | 11,380 |

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- Definition Tabular disclosure of the amounts of interest expense related to convertible notes during the reporting period. + References No definition available. + Details
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- Definition Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation. + References No definition available. + Details
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