DEBT (Tables)

12 Months Ended

Dec. 31, 2023

Debt

Schedule of Debt

Our debt consists of the following:

	December 31,
(In thousands)	2023			2022
2023 Notes	$	—		$	96,204
2025 Notes		192,500			192,500
2028 Notes		261,000			261,000
Total debt		453,500			549,704
Less: Unamortized debt discount and issuance costs		(7,266	)		(9,331	)
Total debt, net		446,234			540,373
Less: Current portion of long-term debt, net		—			96,193
Total long-term debt, net	$	446,234		$	444,180

Aggregate Scheduled Maturities of Convertible Debt

The aggregate scheduled maturities of our convertible debt as of December 31, 2023 are as follows:

(In thousands)	Amount
Year ending December 31,
2024	$	—
2025		192,500
2026		—
2027		—
2028		261,000
Total	$	453,500

2023 Notes

Debt

Summary of Liability and Equity Components of Convertible Notes

Our outstanding 2023 Notes balance consisted of the following as of December 31, 2022:

(In thousands)	December 31, 2022
Principal	$	96,204
Debt issuance costs, net		(11	)
Net carrying amount	$	96,193

Schedule of Components of Interest Expense

The following table sets forth total interest expense recognized related to the 2023 Notes for the years ended December 31, 2023, 2022 and 2021:

	Year Ended December 31,
(In thousands)	2023		2022		2021
Contractual interest expense	$	85	$	2,617	$	5,121
Amortization of debt issuance costs		11		302		580
Total interest and amortization expense	$	96	$	2,919	$	5,701

2025 Notes

Debt

Summary of Liability and Equity Components of Convertible Notes

Our outstanding 2025 Notes balances consisted of the following:

	December 31,
(In thousands)	2023			2022
Principal	$	192,500		$	192,500
Debt discount and issuance costs, net		(1,205	)		(1,917	)
Net carrying amount	$	191,295		$	190,583

Schedule of Components of Interest Expense

The following table sets forth total interest expense recognized related to the 2025 Notes for the years ended December 31, 2023, 2022 and 2021:

	Year Ended December 31,
(In thousands)	2023		2022		2021
Contractual interest expense	$	4,813	$	4,813	$	4,813
Amortization of debt issuance costs		712		692		657
Amortization of debt discount		—		—		7,898
Total interest and amortization expense	$	5,525	$	5,505	$	13,368

2028 Notes

Debt

Summary of Liability and Equity Components of Convertible Notes

Our outstanding 2028 Notes balance consisted of the following:

	December 31,
(In thousands)	2023			2022
Principal	$	261,000		$	261,000
Debt discount and issuance costs, net		(6,061	)		(7,403	)
Net carrying amount	$	254,939		$	253,597

Schedule of Components of Interest Expense

The following table sets forth total interest expense recognized related to the 2028 Notes for the year ended December 31, 2023 and from the issuance through December 31, 2022:

	Year Ended		Date of Issuance through
(In thousands)	December 31, 2023		December 31, 2022
Contractual interest expense	$	5,546	$	4,514
Amortization of debt discount and issuance costs		1,342		1,061
Total interest and amortization expense	$	6,888	$	5,575