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Debt (Tables)
 3 Months Ended
Mar. 31, 2022
Debt Disclosure [Abstract]  
Schedule of Convertible Debt
The net carrying amounts of the Notes were as follows:
March 31, 2022December 31, 2021
2026 Notes2025 Notes2026 Notes2025 Notes
(in thousands)
Principal$1,293,750 $158,429 $1,293,750 $175,000 
Unamortized debt discount(1)
— — (248,179)(45,382)
Unamortized debt issuance costs(17,316)(2,158)(14,541)(1,654)
Carrying amount, net$1,276,434 $156,271 $1,031,030 $127,964 
(1)The carrying value of the equity components of the 2025 Notes and 2026 Notes as of December 31, 2021 was eliminated upon the adoption of ASU 2020-06. Refer to Note 2 to these condensed consolidated financial statements.
Schedule of Interest Expense
The following table sets forth total interest expense recognized related to the Notes:
Three Months Ended March 31,
20222021
2026 Notes2025 Notes2026 Notes2025 Notes
(in thousands)
Coupon interest expense$— $310 $— $1,078 
Amortization of debt discount(1)
— — — 8,568 
Amortization of debt issuance costs990 180 — 403 
Total$990 $490 $— $10,049 
(1)As a result of the adoption of ASU 2020-06 on January 1, 2022, there is no debt discount associated with either the 2025 Notes or the 2026 Notes. Refer to Note 2 to these condensed consolidated financial statements.