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CONVERTIBLE NOTES - Schedule of Convertible Notes (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
2027 Convertible Notes |  |
Long-term debt |  |
Coupon interest rate | 0.375% | 0.375%
Principal Amount | $ 589,380 | $ 589,380
Unamortized Debt Discount and Issuance Costs | (3,783) | (4,952)
Net Carrying Amount | 585,597 | 584,428
2027 Convertible Notes | Significant Other Observable Inputs (Level 2) | Fair value |  |
Long-term debt |  |
Amount | $ 545,530 | $ 512,761
2028 Convertible Notes |  |
Long-term debt |  |
Coupon interest rate | 0.375% | 0.375%
Principal Amount | $ 563,822 | $ 563,822
Unamortized Debt Discount and Issuance Costs | (2,464) | (3,732)
Net Carrying Amount | 561,358 | 560,090
2028 Convertible Notes | Significant Other Observable Inputs (Level 2) | Fair value |  |
Long-term debt |  |
Amount | $ 541,201 | $ 523,932
2030 Convertible Notes |  |
Long-term debt |  |
Coupon interest rate |  | 1.00%
Principal Amount |  | $ 249,172
Unamortized Debt Discount and Issuance Costs |  | (19)
Net Carrying Amount |  | 249,153
2030 Convertible Notes | Significant Other Observable Inputs (Level 2) | Fair value |  |
Long-term debt |  |
Amount |  | $ 246,705
Convertible Notes Payable2030 |  |
Long-term debt |  |
Coupon interest rate | 2.00% | 2.00%
Principal Amount | $ 572,993 | $ 572,993
Unamortized Debt Discount and Issuance Costs | (3,115) | (3,642)
Net Carrying Amount | 569,878 | 569,351
Convertible Notes Payable2030 | Significant Other Observable Inputs (Level 2) | Fair value |  |
Long-term debt |  |
Amount | $ 589,386 | $ 592,756
Convertible Notes Payable2031 |  |
Long-term debt |  |
Coupon interest rate | 1.75% | 1.75%
Principal Amount | $ 620,709 | $ 620,709
Unamortized Debt Discount and Issuance Costs | (11,905) | (13,511)
Net Carrying Amount | 608,804 | 607,198
Convertible Notes Payable2031 | Significant Other Observable Inputs (Level 2) | Fair value |  |
Long-term debt |  |
Amount | $ 576,552 | $ 581,648

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