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DEBT (Tables)
9 Months Ended
Sep. 30, 2020
Debt Disclosure [Abstract]  
Schedule of composition of the Company's debt and financing obligations
The total debt composition of the 2025 Notes is as follows (in thousands):
September 30,December 31,
20202019
0.750% convertible senior notes due 2025
$402,500 $— 
Deferred financing costs(9,373)— 
Discount on debt(84,346)— 
Total debt, net of debt discount and deferred financing costs$308,781 $— 
The total debt composition of the 2022 Notes is as follows (in thousands):
September 30,December 31,
20202019
2.375% convertible senior notes due 2022
$160,000 $345,000 
Deferred financing costs(1,299)(4,143)
Discount on debt(11,018)(34,812)
     Total debt, net of debt discount and deferred financing costs$147,683 $306,045 
Schedule of total interest expense recognized related to the Notes
The following table sets forth the total interest expense recognized in the periods presented (dollar amounts in thousands):

Three Months Ended
September 30,
Nine Months Ended
September 30,
2020201920202019
Contractual interest expense$1,764 $2,048 $5,861 $6,146 
Amortization of debt issuance costs629 429 1,512 1,273 
Amortization of debt discount5,430 3,467 12,684 10,216 
Capitalized interest and other (Note 6)(691)(4)(1,448)(4)
        Total$7,132 $5,940 $18,609 $17,631 
Effective interest rate on convertible senior notes6.78 %7.81 %7.35 %7.81 %