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Debt - (Tables)

3 Months Ended

Mar. 31, 2024

Debt Instrument, Redemption [Line Items]

Summary of liability for sale of future royalties

​

​	​	​	​	​
​		Three Months Ended March 31,		​
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 RPI	​	​	(25,228)	​
Plus: Non-cash interest expense recognized	​	​	50,064	​
Ending balance	​	$	1,838,933	​
Effective interest rate as of March 31, 2024	​		10.8%	​

1.50% Convertible senior notes due 2026

Debt Instrument, Redemption [Line Items]

Summary of convertible notes

​

​	​	​	​	​	​	​	​
​		​	​	​	​	​	​
​	​	March 31, 2024		​	December 31, 2023		​
Principal	​	$	287,500	​	$	287,500	​
Less: Debt issuance costs	​		(2,988)	​		(3,287)	​
Net carrying amount	​	$	284,512	​	$	284,213	​

Summary of interest expense recognized related to the Convertible Notes

​

​	​	​	​	​	​	​	​
​	​	​	Three Months Ended March 31,	​	​	Three Months Ended March 31,	​
​		2024			2023		​
Contractual interest expense	​	$	1,076	​	$	1,069	​
Amortization of debt issuance costs	​	​	296	​	​	288	​
Total	​	$	1,372	​	$	1,357	​
Effective interest rate	​	​	1.9	%	​	1.9	%

​

Blackstone Credit Agreement

Debt Instrument, Redemption [Line Items]

Schedule of credit agreement

​

​	​	​	​	​	​	​
​		March 31, 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		​	Three Months Ended		​
​	March 31,		​	March 31,		​
​	2024		​	2023		​
Contractual interest expense	$	—	​	$	9,178	​
Amortization of debt issuance costs		—	​	​	150	​
Total	$	—	​	$	9,328	​
Effective interest rate	​	—	%	​	13.2	%

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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

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