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Convertible Senior Notes (Tables)
3 Months Ended
Mar. 31, 2021
Debt Disclosure [Abstract]  
Long-Term Debt
The following table provides additional details on the carrying amounts of our:
(in thousands)March 31, 2021December 31, 2020
Liability component:
Principal amount of Notes$230,000 $230,000 
Less: unamortized debt discount and issuance costs(78,549)(80,647)
Net carrying amount of Notes$151,451 $149,353 
Equity component — net carrying amount$75,333 $75,333 
For the three months ended March 31, 2021, total interest expense recognized related to our Notes consists of the following:
(in thousands)Three Months Ended
March 31, 2021
Contractual coupon interest1,615 
Amortization of debt discount and issuance costs2,098 
Total interest expense$3,713