Convertible Senior Notes (Tables)

3 Months Ended

Mar. 31, 2024

3.75% Convertible Senior Notes

Debt Instrument [Line Items]

Schedule of Convertible Senior Notes

The 3.75% Convertible Senior Notes consisted of the following (in thousands):

	March 31,		December 31,
	2024		2023
Principal amounts:
Principal	$	58,462	$	197,278
Unamortized debt issuance costs (1)		(496)		(2,014)
Net carrying amount	$	57,966	$	195,264

(1) Included in the unaudited interim condensed consolidated balance sheets within convertible senior notes, net and amortized over the remaining life of the notes using the effective interest rate method.

Schedule of debt

The following table summarizes the total interest expense and effective interest rate related to the 3.75% Convertible Senior Notes for the three months ended March 31, 2024 and 2023 (in thousands, except for the effective interest rate):

	March 31,			March 31,
	2024			2023
Interest expense	$	1,690	$	1,849
Amortization of debt issuance costs		316		331
Total	$	2,006	$	2,180
Effective interest rate		4.5%		4.5%

7.0% Convertible Senior Note

Debt Instrument [Line Items]

Schedule of Convertible Senior Notes

The 7.00% Convertible Senior Notes consisted of the following (in thousands):

	March 31,
	2024
Principal amounts:
Principal	$	140,396
Unamortized debt premium, net of offering costs (1)		11,440
Net carrying amount	$	151,836

(1) Included in the unaudited interim condensed consolidated balance sheets within convertible senior notes, net and amortized over the remaining life of the notes using the effective interest rate method.

Schedule of debt

The following table summarizes the total interest expense and effective interest rate related to the 7.00% Convertible Senior Notes for the three months ended March 31, 2024 (in thousands, except for the effective interest rate):

	March 31,
	2024
Interest expense	$	296
Amortization of premium		(159)
Total	$	137
Effective interest rate		3.0%