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Convertible Notes (Tables) | 6 Months Ended
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Jun. 30, 2014
Debt Disclosure [Abstract] |
Schedule of convertible notes | The Company’s convertible notes are shown in the following table:
(In thousands) |  | As of June 30, 2014 |  | As of December 31, 2013
1.125% Convertible Senior Notes due 2018 |  | $ | 138,000 |  |  | $ | 138,000 |
5% Convertible Senior Notes due 2014 |  | — |  |  | 172,500 |
Total principal amount of convertible notes |  | $ | 138,000 |  |  | $ | 310,500 |
Unamortized discount - 2018 Notes |  | $ | (25,684 | ) |  | $ | (28,371 | )
Unamortized discount - 2014 Notes |  | — |  |  | (8,453 | )
Total unamortized discount |  | $ | (25,684 | ) |  | $ | (36,824 | )
Total convertible notes |  | $ | 112,316 |  |  | $ | 273,676 |
Less current portion |  | — |  |  | 164,047 |
Total long-term convertible notes |  | $ | 112,316 |  |  | $ | 109,629 |
Schedule of interest expense on notes | Interest expense related to the notes for the three and six months ended June 30, 2014 and 2013 was as follows:
| Three Months Ended |  | Six Months Ended
| June 30, |  | June 30,
| 2014 |  | 2013 |  | 2014 |  | 2013
| (In thousands)
2014 Notes coupon interest at a rate of 5% | $ | 1,773 |  |  | $ | 2,156 |  |  | $ | 3,929 |  |  | $ | 4,313 |
2014 Notes amortization of discount and debt issuance costs at an additional effective interest rate of 11.7% | 3,975 |  |  | 4,145 |  |  | 8,744 |  |  | 8,234 |
2018 Notes coupon interest at a rate of 1.125% | 388 |  |  | — |  |  | 776 |  |  | — |
2018 Notes amortization of discount and debt issuance costs at an additional effective interest rate of 5.5% | 1,494 |  |  | — |  |  | 2,967 |  |  | — |
Total interest expense on convertible notes | $ | 7,630 |  |  | $ | 6,301 |  |  | $ | 16,416 |  |  | $ | 12,547 |

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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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