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Convertible Notes (Tables) | 6 Months Ended
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Jun. 30, 2020
Debt Disclosure [Abstract] |
Schedule of convertible notes | The Company’s convertible notes are shown in the following table:
|  | As of |  |
(In thousands) |  | June 30, 2020 |  | December 31, 2019
2023 Notes |  | $ | 172,500 |  |  | $ | 172,500 |
Unamortized discount - 2023 Notes |  | (18,841) |  |  | (22,163) |
Unamortized debt issuance costs - 2023 Notes |  | (1,300) |  |  | (1,549) |
Total convertible notes |  | 152,359 |  |  | 148,788 |
Less current portion |  | — |  |  | — |
Total long-term convertible notes |  | $ | 152,359 |  |  | $ | 148,788 |
Schedule of interest expense on notes | Interest expense related to the notes for the three and six months ended June 30, 2020 and 2019 was as follows:
|  | Three Months Ended |  |  |  | Six Months Ended |  |
|  | June 30, |  |  |  | June 30, |  |
(In thousands) |  | 2020 |  | 2019 |  | 2020 |  | 2019
2023 Notes coupon interest at a rate of 1.375% |  | $ | 593 |  |  | $ | 593 |  |  | $ | 1,186 |  |  | $ | 1,186 |
2023 Notes amortization of discount and debt issuance costs at an additional effective interest rate of 4.9% |  | 1,798 |  |  | 1,701 |  |  | 3,571 |  |  | 3,379 |
Total interest expense on convertible notes |  | $ | 2,391 |  |  | $ | 2,294 |  |  | $ | 4,757 |  |  | $ | 4,565 |

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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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