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LONG-TERM DEBT - Schedule of Convertible Debt (Details) - USD ($) $ in Thousands | Mar. 31, 2026 | Dec. 31, 2025 | Dec. 15, 2025 | Dec. 31, 2020
--- | --- | --- | --- | ---
Liability Component: |  |  |  |
Unamortized Issuance Costs | $ (11,975) | $ (8,062) |  |
Net Carrying Amount | 2,366,853 | 2,421,359 |  |
Convertible Senior Notes due 2026 |  |  |  |
Liability Component: |  |  |  |
Principal | 208,553 | 208,556 |  |
Net Carrying Amount | 208,447 | 208,131 |  |
Convertible Senior Notes due 2026 | Convertible Notes |  |  |  |
Liability Component: |  |  |  |
Principal | 208,553 | 208,556 | $ 122,098 | $ 345,000
Unamortized Issuance Costs | (106) | (425) |  |
Net Carrying Amount | 208,447 | 208,131 |  |
Fair Value | $ 626,566 | $ 596,798 |  |

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