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v3.21.2

Debt (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2021
Debt |
Schedule of outstanding Convertible Notes | ​
​ | ​ | ​ | ​
​ | September 30, | ​
​ | 2021 | ​
​ | (in thousands)
Long-Term Debt | ​ | ​ | ​
Outstanding Principal | $ | 287,500 | ​
Unamortized debt discount and issuance cost | ​ | (7,415) | ​
Net carrying amount | $ | 280,085 | ​
​ | ​ | ​ | ​
Summary of interest expense | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | Three months ended | Nine months ended
​ | September 30, | September 30,
​ | 2021 | 2021
​ | (in thousands) | ​
Cash interest expense | ​ | ​ | ​ | ​ | ​ | ​
Contractual interest expense | $ | 1,617 | ​ | $ | 4,852 | ​
Non-cash interest expense | ​ | ​ | ​ | ​ | ​ | ​
Amortization of debt discount and debt issuance cost | ​ | 308 | ​ | ​ | 917 | ​
Total interest expense | $ | 1,925 | ​ | $ | 5,769 | ​

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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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