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Income Taxes (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2020 | Jun. 30, 2020 | Jun. 30, 2020 | Sep. 30, 2020 | Dec. 31, 2020 | Dec. 31, 2018 | May 31, 2020 | May 29, 2020 | May 18, 2020 | Mar. 31, 2018
Deferred income tax benefit | $ (6,644) | $ (17,371) | $ (17,371) | $ (24,015) | $ (30,845) | $ (9,295) |  |  |  |
Interest rate (as a percent) |  |  |  |  |  |  | 3.50% |  |  |
Giner ELX, Inc |  |  |  |  |  |  |  |  |  |
Income tax benefit related to deferred taxes |  |  |  |  | 5,200 |  |  |  |  |
3.75% Convertible Senior Notes |  |  |  |  |  |  |  |  |  |
Future taxable income attributable to the net credit to additional paid-in capital |  |  |  |  | $ 25,600 |  |  |  |  |
Interest rate (as a percent) |  |  |  |  | 3.75% |  | 3.75% | 3.75% | 3.75% |
5.5% Convertible Senior Notes |  |  |  |  |  |  |  |  |  |
Interest rate (as a percent) |  |  |  |  | 5.50% |  | 5.50% |  | 5.50% | 5.50%

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