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Debt (Tables) | 12 Months Ended
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Dec. 31, 2020
Debt Disclosure [Abstract] |
Schedule of Net Carrying Amount of Debt | The Term Loan consisted of the following (in thousands):
|  | December 31,
|  | 2019
Principal |  | $ | 47,500 |
Less: unamortized debt discount and debt issuance costs |  | (962) |
Net carrying amount |  | $ | 46,538 |
The 2025 Notes consist of the following (in thousands):
| December 31, 2020 |  |
Liability component |  |  |
Principal | $ | 166,898 |  |  |
Add: fair value of embedded derivative | 4,898 |  |  |
Less: unamortized debt discount | (3,703) |  |  |
Less: unamortized issuance costs | (2,946) |  |  |
Net carrying amount | $ | 165,147 |  |  |
The 2022 Notes consist of the following (in thousands):
|  | December 31, 2019
Liability component |  |
Principal |  | $ | 105,125 |
Less: unamortized debt discount and issuance costs |  | (3,791) |
Net carrying amount |  | $ | 101,334 |
Schedule of Interest Expense | The following table sets forth total interest expense recognized related to the Term Loan during the years ended December 31, 2020 and 2019 (in thousands):
| Year Ended December 31,
| 2020 |  | 2019
Contractual interest expense | $ | 1,667 |  |  | $ | 4,789 |
Amortization of debt discount | 859 |  |  | 1,331 |
Amortization of debt issuance costs | 103 |  |  | 161 |
Total interest expense | $ | 2,629 |  |  | $ | 6,281 |
The following table sets forth total interest expense recognized related to the 2025 Notes (in thousands):
|  |  |  | Year Ended December 31, 2020
Contractual interest expense |  |  |  |  | $ | 3,434 |  |
Amortization of debt discount |  |  |  |  | 552 |  |
Amortization of debt issuance costs |  |  |  |  | 439 |  |
Total interest expense |  |  |  |  | $ | 4,425 |  |
The following table sets forth total interest expense recognized related to the 2022 Notes (in thousands):
| Year Ended December 31,
| 2020 |  | 2019
Contractual interest expense | $ | 768 |  |  | $ | 5,782 |
Amortization of debt discount | 1,952 |  |  | 7,821 |
Amortization of debt issuance costs | 111 |  |  | 459 |
Total interest expense | $ | 2,831 |  |  | $ | 14,062 |

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