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Debt - (Tables) | 6 Months Ended
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Jun. 30, 2024
Debt Instrument, Redemption [Line Items] |
Summary of liability for sale of future royalties | ​
​ | ​ | ​ | ​ | ​
​ |  | Six Months Ended June 30, | ​
Liability for sale of future royalties- (current and noncurrent) | ​ | 2024 | ​
Beginning balance as of December 31, 2023 | ​ | $ | 1,814,097 | ​
Less: Non-cash royalty revenue payable to Royalty Pharma | ​ | ​ | (73,349) | ​
Plus: Non-cash interest expense recognized | ​ | ​ | 102,340 | ​
Plus: Cash received from Royalty Pharma | ​ | ​ | 241,792 | ​
Ending balance | ​ | $ | 2,084,880 | ​
Effective interest rate as of June 30, 2024 | ​ |  | 9.9% | ​
1.50% Convertible senior notes due 2026 |
Debt Instrument, Redemption [Line Items] |
Summary of convertible notes | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | June 30, 2024 | ​ | December 31, 2023 | ​
Principal | ​ | $ | 287,500 | ​ | $ | 287,500 | ​
Less: Debt issuance costs | ​ |  | (2,694) | ​ |  | (3,287) | ​
Net carrying amount | ​ | $ | 284,806 | ​ | $ | 284,213 | ​
Summary of 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 | ​ | $ | 1,066 | ​ | $ | 1,066 | ​ | $ | 2,142 | ​ | $ | 2,135 | ​
Amortization of debt issuance costs | ​ |  | 295 | ​ | ​ | 290 | ​ | ​ | 591 | ​ | ​ | 578 | ​
Total | ​ | $ | 1,361 | ​ | $ | 1,356 | ​ | $ | 2,733 | ​ | $ | 2,713 | ​
Effective interest rate | ​ |  | 1.9 | % | ​ | 1.9 | % | ​ | 1.9 | % | ​ | 1.9 | %
​
Blackstone Credit Agreement |
Debt Instrument, Redemption [Line Items] |
Schedule of credit agreement | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | June 30, 2024 | ​ | December 31, 2023
Principal | ​ | $ | — | ​ | $ | 300,000
Less: Debt issuance costs | ​ |  | — | ​ | ​ | —
Repayment of senior secured term loan | ​ | ​ | — | ​ | ​ | (300,000)
Net carrying amount | ​ | $ | — | ​ | $ | —
Summary of interest expense recognized related to debt | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | Three Months Ended | ​ | Six Months Ended | ​
​ | June 30, | ​ | June 30, | ​
​ | 2024 | ​ | 2023 | ​ | 2024 | ​ | 2023 | ​
Contractual interest expense | $ | — | ​ | $ | 9,354 | ​ | $ | — | ​ | $ | 18,532 | ​
Amortization of debt issuance costs |  | — | ​ |  | 272 | ​ | ​ | — | ​ | ​ | 423 | ​
Total | $ | — | ​ | $ | 9,626 | ​ | $ | — | ​ | $ | 18,955 | ​
Effective interest rate | ​ | — | % | ​ | 13.4 | % | ​ | — | % | ​ | 13.4 | %

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