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Debt (Tables) | 6 Months Ended
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Jun. 30, 2022
Debt Disclosure [Abstract] |
Schedule of convertible notes payable | Total convertible notes payable consisted of the following at (in thousands):
| June 30, 2022 |  | December 31, 2021
Principal amount of Notes | $ | 325,000 |  |  | $ | 325,000 |
Unamortized debt issuance costs | (831) |  |  | (1,542) |
Total convertible notes payable(1) | $ | 324,169 |  |  | $ | 323,458 |
(1) Convertible notes are classified as current liabilities and as non-current liabilities in the consolidated balance sheets as of June 30, 2022 and December 31, 2021, respectively.
Schedule of interest expense | The interest expense incurred in connection with the Notes consisted of the following (in thousands):
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2022 |  | 2021 |  | 2022 |  | 2021
Coupon interest at 3.75% | $ | 3,047 |  |  | $ | 3,047 |  |  | $ | 6,094 |  |  | $ | 6,094 |
Amortization of debt issuance costs | 356 |  |  | 356 |  |  | 712 |  |  | 712 |
Total interest expense on Notes | $ | 3,403 |  |  | $ | 3,403 |  |  | $ | 6,806 |  |  | $ | 6,806 |

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- Definition Tabular disclosure of convertible debt instrument. Includes, but is not limited to, principal amount and amortized premium or discount. + References No definition available. + Details
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