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Convertible Notes (Tables) | 9 Months Ended
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Sep. 30, 2013
Debt Disclosure [Abstract] |
Schedule of convertible notes | The Company’s convertible notes are shown in the following table:
(In thousands) |  | As of September 30, 2013 |  | As of December 31, 2012
5% Convertible Senior Notes due 2014 |  | $ | 172,500 |  |  | $ | 172,500 |
1.125% Convertible Senior Notes due 2018 |  | 138,000 |  |  | — |
Total principal amount of convertible notes |  | $ | 310,500 |  |  | $ | 172,500 |
Unamortized discount - 2014 Notes |  | $ | (12,769 | ) |  | $ | (24,944 | )
Unamortized discount - 2018 Notes |  | (29,684 | ) |  | — |
Total unamortized discount |  | $ | (42,453 | ) |  | $ | (24,944 | )
Total convertible notes |  | $ | 268,047 |  |  | $ | 147,556 |
Less current portion |  | 159,731 |  |  | — |
Total long-term convertible notes |  | $ | 108,316 |  |  | $ | 147,556 |
Schedule of interest expense on notes | Interest expense related to the notes for the three and nine months ended September 30, 2013 and 2012 was as follows:
| Three Months Ended |  | Nine Months Ended
| September 30, |  | September 30,
| 2013 |  | 2012 |  | 2013 |  | 2012
| (In thousands)
2014 Notes coupon interest at a rate of 5% | $ | 2,156 |  |  | $ | 2,156 |  |  | $ | 6,469 |  |  | $ | 6,469 |
2014 Notes amortization of discount and debt issuance costs at an additional effective interest rate of 11.7% | 4,416 |  |  | 3,789 |  |  | 12,650 |  |  | 10,856 |
2018 Notes coupon interest at a rate of 1.125% | $ | 194 |  |  | $ | — |  |  | $ | 194 |  |  | $ | — |
2018 Notes amortization of discount and debt issuance costs at an additional effective interest rate of 5.5% | $ | 719 |  |  | $ | — |  |  | $ | 719 |  |  | $ | — |
Total interest expense on convertible notes | $ | 7,485 |  |  | $ | 5,945 |  |  | $ | 20,032 |  |  | $ | 17,325 |

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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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