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DEBT (Tables) | 9 Months Ended
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Sep. 30, 2021
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,
| 2021 |  | 2020
0.750% convertible senior notes due 2025 | $ | 402,500 |  |  | $ | 402,500 |
Deferred financing costs | (7,610) |  |  | (8,940) |
Discount on debt | (68,744) |  |  | (80,530) |
Total debt, net of debt discount and deferred financing costs | $ | 326,146 |  |  | $ | 313,030 |
The total debt composition of the 2022 Notes is as follows (in thousands):
| September 30, |  | December 31,
| 2021 |  | 2020
2.375% convertible senior notes due 2022 | $ | 160,000 |  |  | $ | 160,000 |
Deferred financing costs | (443) |  |  | (1,089) |
Discount on debt | (3,806) |  |  | (9,263) |
Total debt, net of debt discount and deferred financing costs | $ | 155,751 |  |  | $ | 149,648 |
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,
| 2021 |  | 2020 |  | 2021 |  | 2020
Contractual interest expense | $ | 1,704 |  |  | $ | 1,764 |  |  | $ | 5,122 |  |  | $ | 5,861 |
Amortization of debt issuance costs | 666 |  |  | 629 |  |  | 1,976 |  |  | 1,512 |
Amortization of debt discount | 5,844 |  |  | 5,430 |  |  | 17,245 |  |  | 12,684 |
Capitalized interest and other (Note 5) | (881) |  |  | (691) |  |  | (3,016) |  |  | (1,448) |
Total | $ | 7,333 |  |  | $ | 7,132 |  |  | $ | 21,327 |  |  | $ | 18,609 |
Effective interest rate on convertible senior notes | 6.70 | % |  | 6.78 | % |  | 6.70 | % |  | 7.35 | %

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- Definition Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation. + References No definition available. + Details
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