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Convertible Senior Notes (Tables)
 9 Months Ended
Sep. 30, 2024
Debt Disclosure [Abstract]  
Schedule of Debt
The following table presents the net carrying amount of the notes (in thousands):
September 30, 2024December 31, 2023
2026 Notes2025 Notes2026 Notes2025 Notes
Principal$244,479 $358,914 $244,479 $358,914 
Unamortized issuance costs(1,237)(692)(1,721)(1,835)
Net carrying amount$243,242 $358,222 $242,758 $357,079 
Schedule Of Interest Expense Recognized
The following table presents the total interest expense recognized related to the notes (in thousands):

Three Months Ended September 30,Nine Months Ended September 30,
2024
2023
2024
2023
2026 notes:
Contractual interest expense$— $— $— $— 
Amortization of issuance costs163 238 484 873 
Total 2026 notes interest expense$163 $238 $484 $873 
2025 notes:
Contractual interest expense$111 $112 $331 $510 
Amortization of issuance costs384 384 1,144 1,737 
Total 2025 notes interest expense$495 $496 $1,475 $2,247