Convertible Senior Notes (Tables)

3 Months Ended

Mar. 31, 2024

Debt Instrument [Line Items]

Carrying Value of Convertible Senior Notes

The carrying value of the Company's convertible senior notes is as follows:

	March 31, 2024			December 31, 2023
	(Amounts in thousands, except percentage data)
1.00% Convertible Senior Notes due 2028:
Principal amount	$	600,000		$	600,000
Unamortized debt discount	$	(78,132	)	$	(81,457	)
Unamortized debt issuance costs		(7,950	)		(8,400	)
Carrying amount - Convertible Senior Notes due 2028, net	$	513,918		$	510,143
0.375% Convertible Senior Notes due 2024:
Principal amount	$	69,616		$	69,700
Unamortized debt issuance costs		(136	)		(248	)
Carrying amount - Convertible Senior Notes due 2024, net	$	69,480		$	69,452

2023 Notes

Debt Instrument [Line Items]

Schedule of convertiable note interest expense

The following table sets forth total interest expense recognized related to the 2023 Notes for the three months ended March 31, 2024 for which there were no comparable amounts for the same period of 2023 (amounts in thousands, except percentage data):

	Three Months Ended March 31,
	2024
Contractual interest expense – 2023 Notes	$	1,500
Amortization of debt discount – 2023 Notes		3,326
Amortization of debt issuance costs – 2023 Notes		371
Total	$	5,197
Effective interest rate of the liability component		4.39	%

2019 Notes

Debt Instrument [Line Items]

Schedule of convertiable note interest expense

The following table sets forth total interest expense recognized related to the 2019 Notes:

	Three Months Ended March 31,
	2024			2023
	(Amounts in thousands, except percentage data)
Contractual interest expense – 2019 Notes	$	65		$	270
Amortization of debt issuance costs – 2019 Notes		112			457
Total	$	177		$	727
Effective interest rate of the liability component		1.00	%		1.00	%