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DEBT - Convertible Senior Notes Narrative (Details) |  | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jul. 24, 2020 USD ($) day $ / shares Rate shares | Mar. 31, 2024 USD ($) Rate | Mar. 31, 2023 USD ($) | Dec. 31, 2023 USD ($) | Dec. 07, 2023 USD ($) | Mar. 08, 2023 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |
Gain on extinguishment of debt |  | $ 0 | $ 34,308,000 |  |  |
Write-off of previously-capitalized debt issuance costs |  | 0 | 2,373,000 |  |  |
Amortization of debt issuance costs |  | $ 612,000 | 1,959,000 |  |  |
2025 Convertible Notes |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate | Rate |  | 0.50% |  |  |  |
Initial conversion rate, shares per $1,000 principal amount of notes | shares | 2.1683 |  |  |  |  |
Initial conversion price per share (in dollars per share) | $ / shares | $ 461.19 |  |  |  |  |
Debt repurchase amount |  |  |  |  | $ 100,200,000 | $ 190,600,000
Fair value of debt repurchased |  |  |  |  | 81,200,000 | 156,300,000
Debt repurchased amount, accrued interest |  |  |  |  | $ 200,000 | $ 100,000
Gain on extinguishment of debt |  |  |  | $ 53,300,000 |  |
Write-off of previously-capitalized debt issuance costs |  |  |  | 3,200,000 |  |
Debt prepayment costs |  |  |  | $ 1,600,000 |  |
Threshold trading days | day | 20 |  |  |  |  |
Threshold consecutive trading days | day | 30 |  |  |  |  |
Conversion rate, sales price of common stock as a percentage of the conversion price | Rate | 130.00% |  |  |  |  |
Interest expense |  | $ 800,000 | 1,400,000 |  |  |
Interest expense recognized associated with the coupon rate |  | 400,000 | 700,000 |  |  |
Annual interest rate on convertible senior notes | 0.50% |  |  |  |  |
Amortization of debt issuance costs |  | $ 400,000 | $ 700,000 |  |  |
2025 Convertible Notes | Convertible Debt |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Aggregate principal amount | $ 575,000,000 |  |  |  |  |
Stated interest rate | 0.50% | 0.50% |  |  |  |
Fair value |  | $ 265,000,000 |  |  |  |

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