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Debt (Tables) | 6 Months Ended
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Jun. 30, 2016
Debt Disclosure [Abstract] |
Convertible Debt | The Convertible Notes consisted of the following at June 30, 2016 (in thousands):
Liability component: |
Principal | $ | 120,000 |
Less: unamortized debt discount and debt issuance costs | (33,316 | )
Net carrying amount | $ | 86,684 |
Equity component | $ | 38,305 |
Interest Expense Summary | The following table sets forth total interest expense recognized related to the Convertible Notes during the three and six months ended June 30, 2016 and 2015 (in thousands):
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2016 |  | 2015 |  | 2016 |  | 2015
Contractual interest expense | $ | 1,650 |  |  | $ | 367 |  |  | $ | 3,300 |  |  | $ | 367 |
Amortization of debt discount | 1,980 |  |  | 440 |  |  | 3,960 |  |  | 440 |
Amortization of debt issuance costs | 131 |  |  | 29 |  |  | 263 |  |  | 29 |
Total interest expense | $ | 3,761 |  |  | $ | 836 |  |  | $ | 7,523 |  |  | $ | 836 |

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- Definition Tabular disclosure of borrowings which can be exchanged for a specified number of another security at the option of the issuer or the holder. Disclosures include, but are not limited to, principal amount, amortized premium or discount, and amount of liability and equity components. + References No definition available. + Details
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- Definition Tabular disclosure of interest income and expense, including, but not limited to, interest income and expense from investments, loans, and securities. + References No definition available. + Details
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