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Convertible Senior Notes (Tables)
 6 Months Ended
Jun. 30, 2022
Debt Disclosure [Abstract]  
Summary of Net Carrying Amount of Liability and Equity Component of 2025 Notes
The net carrying amount of the liability component of the 2025 Notes was as follows (in thousands):
June 30,
2022		December 31,
2021
Convertible senior notes, net:
Principal$747,496 $747,500 
Unamortized debt issuance costs(10,336)(12,018)
Net carrying amount$737,160 $735,482 
Interest Expense related to 2025 Notes
The following table sets forth the interest expense related to the 2025 Notes (in thousands):
Three Months Ended
June 30,		Six Months Ended
June 30,
2022202120222021
Contractual interest expense$233 $233 $467 $467 
Amortization of issuance costs842 837 1,682 1,672 
Total$1,075 $1,070 $2,149 $2,139