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Debt - (Tables)

6 Months Ended

Jun. 30, 2023

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)	​	2023		​
Beginning balance as of December 31, 2022	​	$	757,886	​
Less: Non-cash royalty revenue payable to RPI	​	​	(29,059)	​
Plus: Non-cash interest expense recognized	​	​	37,753	​
Ending balance	​	$	766,580	​
Effective interest rate as of June 30, 2023	​		9.7	%

1.50% Convertible senior notes due 2026

Debt Instrument, Redemption [Line Items]

Summary of convertible notes

​

​	​	​	​	​	​	​	​
​		​	​	​	​	​	​
​	​	June 30, 2023		​	December 31, 2022		​
Principal	​	$	287,500	​	$	287,500	​
Less: Debt issuance costs	​		(3,878)	​		(4,456)	​
Net carrying amount	​	$	283,622	​	$	283,044	​

Summary of interest expense recognized related to the Convertible Notes

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​

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Three Months Ended June 30,

​

Six Months Ended June 30,

​

​

​

2023

​

2022

2023

​

2022

​

Contractual interest expense

​

$

1,066

​

$

1,066

​

$

2,135

​

$

2,135

​

Amortization of debt issuance costs

​

290

​

​

284

​

​

578

​

​

567

​

Total

​

$

1,356

​

$

1,350

​

$

2,713

​

$

2,702

​

Effective interest rate

​

1.9

%

​

1.9

%

​

1.9

%

​

1.9

%

3.00% Convertible senior notes due 2022

Debt Instrument, Redemption [Line Items]

Summary of interest expense recognized related to the Convertible Notes

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Three Months Ended June 30,

Six Months Ended June 30,

​

​

2023

2022

2023

2022

​

Contractual interest expense

​

$

—

​

$

1,131

​

$

—

​

$

2,241

​

​

Amortization of debt issuance costs

​

—

​

186

​

—

​

368

​

​

Total

​

$

—

​

$

1,317

​

$

—

​

$

2,609

​

​

Effective interest rate

​

—

%

3.5

%

—

%

3.5

%

​

Blackstone Credit Agreement

Debt Instrument, Redemption [Line Items]

Schedule of credit agreement

​

​	​	​	​	​	​	​
​	​	June 30, 2023		​	December 31, 2022
Principal	​	$	300,000	​	$	300,000
Less: Debt issuance costs	​		(10,979)	​		(11,322)
Net carrying amount	​	$	289,021	​	$	288,678

Summary of interest expense recognized related to debt

​

​	​	​	​	​	​	​
​	Three Months Ended		​	Six Months Ended		​
​	June 30,		​	June 30,		​
​	2023		​	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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+ 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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