v3.21.1

Convertible Notes (Tables) - Convertible Notes | 3 Months Ended
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Mar. 31, 2021
Convertible Notes |
Schedule of Convertible Notes | ​
​ | ​ | ​ | ​
​ | ​ | March 31,
​ |  | 2021
Par value of the Convertible Notes | ​ | $ | 201,250
Unamortized debt issuance costs | ​ |  | (3,135)
Net carrying value of Convertible Notes | ​ | $ | 198,115
Schedule of interest expense related to the Convertible Notes | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Three Months Ended | ​
​ | ​ | March 31, | ​
​ | ​ | 2021 |  | 2020(2) | ​
Contractual interest expense |  | $ | 503 |  | $ | 503 | ​
Amortization of debt issuance costs | ​ |  | 307 | ​ | ​ | 220 | ​
Amortization of debt discount | ​ |  | — | ​ | ​ | 2,156 | ​
Total | ​ | $ | 810 | ​ | $ | 2,879 | ​
Effective interest rate of the liability component | ​ |  | 1.6 | % | ​ | 7.1 | %
| (2) | As noted above, prior period amounts have not been adjusted upon adoption of ASU 2020-06 under the modified retrospective method.
Schedule of amortization expense for debt issuance costs | ​
​ | ​ | ​ | ​
​ | ​ | Debt Issuance
​ | ​ | Costs
April 1, 2021―December 31, 2021 | ​ | $ | 927
January 1, 2022―December 31, 2022 | ​ | ​ | 1,254
January 1, 2023―December 31, 2023 | ​ | ​ | 954
​ | ​ | $ | 3,135

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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 Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Tabular disclosure of interest expense related to the convertible notes. + References No definition available. + Details
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- Details
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