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Debt (Tables) | 6 Months Ended
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Jun. 30, 2019
Debt Disclosure [Abstract] |
Schedule of liability components of the Convertible Notes | The Convertible Notes and Senior Secured Term Loan consist of the following:
Liability component (in thousands) |  | June 30, 2019 |  | December 31, 2018
Principal |  | $ | 152,825 |  |  | $ | 400,000 |
Less: debt discount | (1) |  | (3,373 | ) |  | (74,145 | )
Less: deferred financing | (1) |  | (388 | ) |  | (4,115 | )
Net carrying value of the debt |  | $ | 149,064 |  |  | $ | 321,740 |
______________________________________ (1) Included in the Consolidated Balance Sheets within Convertible Notes and Senior Secured Term Loan and amortized to interest expense over the remaining life of the Convertible Notes and Senior Secured Term Loan using the effective interest rate method.
Components of total interest expense recognized related to the Convertible Notes | The following table sets forth total interest expense recognized related to the Convertible Notes and Senior Secured Term Loan for the three and six months ended June 30, 2019 and 2018, respectively:
|  | Three Months Ended June 30, |  | Six Months Ended June 30,
Interest component (in thousands) |  | 2019 |  | 2018 |  | 2019 |  | 2018
Contractual interest expense |  | $ | 4,146 |  |  | $ | 1,888 |  |  | $ | 8,959 |  |  | $ | 3,775 |
Amortization of debt discount |  | 423 |  |  | 2,539 |  |  | 1,982 |  |  | 5,011 |
Amortization of deferred financing |  | 39 |  |  | 133 |  |  | 122 |  |  | 262 |
Total |  | $ | 4,608 |  |  | $ | 4,560 |  |  | $ | 11,063 |  |  | $ | 9,048 |

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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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