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Convertible Senior Notes (Tables) - Convertible senior notes | 6 Months Ended
--- | ---
Jun. 30, 2024
Debt Instrument [Line Items] |
Schedule of convertible notes outstanding | As of June 30, 2024, the outstanding balance of the 2029 Convertible Notes consisted of the following: ​
​ | ​ | ​
​ | 2029 Convertible Notes
Principal | $ | 241,500
Less: unamortized issuance costs | ​ | (4,850)
Net carrying amount | $ | 236,650
Schedule of future minimum payments | As of June 30, 2024, the future minimum payments on the 2029 Convertible Notes were as follows: ​
​ | ​ | ​ | ​
Years ended December 31, | ​ | 2029 Convertible Notes
2024 | ​ | $ | 3,471
2025 | ​ | ​ | 6,943
2026 | ​ | ​ | 6,943
2027 | ​ | ​ | 6,943
2028 | ​ | ​ | 6,943
Thereafter | ​ | ​ | 244,972
Total minimum payments | ​ | $ | 276,215
Less: interest | ​ | ​ | (34,715)
Less: unamortized issuance costs | ​ | ​ | (4,850)
Convertible Notes carrying value | ​ | $ | 236,650
​
Schedule of total interest expense recognized related to the convertible notes | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | Three Months Ended June 30, | ​ | Six Months Ended June 30,
​ | 2024 | ​ | 2023 | ​ | 2024 | ​ | 2023
Contractual interest expense | $ | 1,879 | ​ | $ | 1,909 | ​ | $ | 3,787 | ​ | $ | 3,388
Amortization of debt issuance costs | ​ | 286 | ​ | ​ | 298 | ​ | ​ | 586 | ​ | ​ | 561
Total interest expense | $ | 2,165 | ​ | $ | 2,207 | ​ | $ | 4,373 | ​ | $ | 3,949
​

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