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FINANCING ARRANGEMENTS (Tables) | 12 Months Ended
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Dec. 31, 2020
Debt Disclosure [Abstract] |
Schedule of Notes | The carrying amount of the Notes consisted of the following as of December 31, 2020 and 2019 (in thousands):
| December 31,
| 2020 |  | 2019
Liability component: |  |  |
Principal amount | $ | 250,000 |  |  | $ | 250,000 |
Less: debt discount | (20,510) |  |  | (35,131) |
Net carrying amount of liability component | $ | 229,490 |  |  | $ | 214,869 |
Net carrying amount of equity component | $ | 67,014 |  |  | $ | 67,014 |
Schedule of Convertible Debt Interest Expense | As of December 31, 2020, the remaining term of the Notes is approximately 1 years and 3 months. During the years ended December 31, 2020, 2019 and 2018, we recognized interest costs on the Notes as follows (in thousands):
| Year Ended December 31,
| 2020 |  | 2019 |  | 2018
Contractual interest (3.25% of the principal amount per annum) | $ | 8,128 |  |  | $ | 8,128 |  |  | $ | 8,128 |
Amortization of debt discount | 14,621 |  |  | 13,200 |  |  | 11,916 |
Total | $ | 22,749 |  |  | $ | 21,328 |  |  | $ | 20,044 |

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- Definition Tabular disclosure of borrowings which can be exchanged for a specified number of another security at the option of the issuer or the holder. Disclosures include, but are not limited to, principal amount, amortized premium or discount, and amount of liability and equity components. + References No definition available. + Details
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