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CONVERTIBLE SENIOR NOTES (Tables)
9 Months Ended
Sep. 30, 2024
Debt Disclosure [Abstract]  
Schedule of Net Carrying Amount
The net carrying amount of the liability for the 2030 Notes is included as convertible senior notes, net, non-current in the Condensed Consolidated Balance Sheets as follows:
(in thousands)September 30,
2024
December 31,
2023
Principal amount$441,000 $441,000 
Unamortized debt premium471 524 
Unamortized debt issuance costs(6,197)(6,907)
Net carrying amount$435,274 $434,617 
The net carrying amount of the liability for the 2028 Notes is included as convertible senior notes, net, non-current in the Condensed Consolidated Balance Sheets as follows:
(in thousands)September 30,
2024
December 31,
2023
Principal amount$459,000 $459,000 
Unamortized debt issuance costs(1,130)(1,374)
Net carrying amount$457,870 $457,626 
Schedule of Interest Expense
Interest expense for the 2030 Notes was as follows:
Three Months Ended September 30,Nine Months Ended September 30,
(in thousands)2024202320242023
Contractual interest expense$1,516 $1,516 $4,565 $1,516 
Amortization of debt issuance costs237 229 712 229 
Total interest expense$1,753 $1,745 $5,277 $1,745 
Interest expense for the 2028 Notes was as follows:
Three Months Ended September 30,Nine Months Ended September 30,
(in thousands)2024202320242023
Contractual interest expense$1,721 $1,721 $5,163 $8,415 
Amortization of debt issuance costs81 80 243 392 
Total interest expense$1,802 $1,801 $5,406 $8,807