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CONVERTIBLE NOTES - Summary of Interest Expense (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Debt Disclosure [Abstract] |  |  |  |
Debt issuance costs amortization | $ 1,316 | $ 1,315 | $ 2,631 | $ 2,692
Debt discount amortization | 264 | 25 | 289 | 56
Gain on settlements of convertible notes, net | (10,254) | 0 | (10,254) | (10,324)
Coupon interest expense | 6,863 | 4,906 | 11,770 | 8,260
Total interest expense (income) on convertible notes | $ (1,811) | $ 6,246 | $ 4,436 | $ 684

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