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DEBT (Tables)
 3 Months Ended
Mar. 31, 2021
Debt Disclosure [Abstract]  
Schedule of Debt
The following table provides information regarding the Company’s debt.
March 31,
2021		December 31,
2020
(In thousands)
Convertible notes
Notes due 2028$575,000 $— 
Less: unamortized discount and issuance costs(164,905)— 
Carrying amount of Notes due 2028410,095 — 
Notes due 2026632,500 — 
Less: unamortized discount and issuance costs(129,630)— 
Carrying amount of Notes due 2026502,870 — 
Notes due 2025102,260 320,000 
Less: unamortized discount and issuance costs(19,657)(64,979)
Carrying amount of Notes due 202582,603 255,021 
Notes due 20241,068 88,140 
Less: unamortized discount and issuance costs(217)(19,119)
Carrying amount of Notes due 2024851 69,021 
Notes due 20235,000 5,000 
Less: unamortized issuance costs(92)(102)
Carrying amount of Notes due 20234,908 4,898 
Sale of long-term financing receivable recorded as debt902 1,925 
Total carrying amount of debt1,002,229 330,865 
Less: current portion of convertible notes and long-term financing receivable recorded as debt(84,356)(325,967)
Long-term debt$917,873 $4,898 
The following table presents the total amount of interest cost recognized in the statement of operations relating to the Notes due 2028:
Three Months Ended
March 31,
2021
(In thousands)
Amortization of debt discount$1,611 
Amortization of debt issuance costs79 
Total interest cost recognized$1,690 
The following table presents the total amount of interest cost recognized in the statement of operations relating to the Notes due 2026:
Three Months Ended
March 31,
2021
(In thousands)
Amortization of debt discount$1,786 
Amortization of debt issuance costs135 
Total interest cost recognized$1,921 
The following table presents the total amount of interest cost recognized relating to the Notes due 2025 (in thousands):

Three Months Ended
March 31,
20212020
(In thousands)
Contractual interest expense$150 $49 
Amortization of debt discount2,389 743 
Amortization of debt issuance costs294 87 
Total interest cost recognized$2,833 $879 
The following table presents the total amount of interest cost recognized in the statement of operations relating to the Notes due 2024:
Three Months Ended
March 31,
20212020
(In thousands)
Contractual interest expense$3 $330 
Amortization of debt discount733 1,562 
Amortization of debt issuance costs71 166 
Total interest cost recognized$807 $2,058 
The following table presents the amount of interest cost recognized relating to the contractual interest coupon and the amortization of debt issuance costs of the Notes due 2023.
Three Months Ended
March 31,
20212020
(In thousands)
Contractual interest expense$50 $50 
Amortization of debt issuance costs10 10 
Total interest costs recognized$60 $60