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DEBT - Convertible Senior Notes (Details) |  |  | 3 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jun. 01, 2022 USD ($) | Jul. 24, 2020 USD ($) day $ / shares shares | Sep. 30, 2020 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 07, 2023 USD ($) | Mar. 08, 2023 USD ($) | May 31, 2017 USD ($) $ / shares shares
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Gain on the extinguishment of debt |  |  |  | $ 48,562,000 | $ 0 | $ 0 |  |  |
Write-off of previously-capitalized debt issuance costs |  |  |  | 0 | 0 | 1,066,000 |  |  |
Amortization of debt issuance costs |  |  |  | 3,137,000 | 6,432,000 | 5,992,000 |  |  |
Amortization of debt discount |  |  |  | 0 | 1,475,000 | $ 30,695,000 |  |  |
2025 Convertible Notes |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Interest rate (percentage) |  |  |  |  |  | 0.50% |  |  |
Repurchased face amount |  |  |  |  |  |  | $ 100,200,000 | $ 190,600,000 |
Repurchased amount |  |  |  |  |  |  | 81,200,000 | 156,300,000 |
Repurchased amount, accrued interest |  |  |  |  |  |  | $ 200,000 | $ 100,000 |
Gain on the extinguishment of debt |  |  |  | 53,300,000 |  |  |  |  |
Write-off of previously-capitalized debt issuance costs |  |  |  | 3,200,000 |  |  |  |  |
Debt repayment costs |  |  |  | 1,600,000 |  |  |  |  |
Conversion rate, number of shares per $1,000 of principal | shares |  | 2.1683 |  |  |  |  |  |  |
Conversion price (in dollars per share) | $ / shares |  | $ 461.19 |  |  |  |  |  |  |
Threshold percentage of stock price trigger |  | 130.00% |  |  |  |  |  |  |
Redemption percentage |  | 100.00% |  |  |  |  |  |  |
Nonconvertible debt borrowing rate at the date of issuance (percentage) |  | 5.30% |  |  |  |  |  |  |
Convertible debt, noncurrent |  | $ 455,600,000 |  |  |  |  |  |  |
Carrying amount of debt, equity component |  | 119,400,000 |  |  |  |  |  |  |
Debt issuance costs, gross |  | 15,100,000 |  |  |  |  |  |  |
Debt issuance costs, liability component |  | 12,000,000 |  | 2,321,000 | 7,734,000 |  |  |  |
Debt issuance costs, equity component |  | $ 3,100,000 |  |  |  |  |  |  |
Interest expense |  |  |  | 4,300,000 | 5,900,000 | $ 27,200,000 |  |  |
Interest expense, excluding amortization |  |  |  | $ 2,100,000 | $ 2,900,000 | $ 2,900,000 |  |  |
Interest rate |  |  |  | 0.50% | 0.50% | 0.50% |  |  |
Amortization of debt issuance costs |  |  |  | $ 2,200,000 | $ 3,000,000 | $ 2,200,000 |  |  |
Amortization of debt discount |  |  |  |  |  | 22,100,000 |  |  |
Repayments of convertible debt |  |  |  | 237,464,000 | 0 | $ 0 |  |  |
2025 Convertible Notes | Conversion option one |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Threshold trading days | day |  | 20 |  |  |  |  |  |  |
Threshold consecutive trading days | day |  | 30 |  |  |  |  |  |  |
Threshold percentage of stock price trigger |  | 130.00% |  |  |  |  |  |  |
2025 Convertible Notes | Conversion option two |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Threshold trading days | day |  | 5 |  |  |  |  |  |  |
Threshold consecutive trading days | day |  | 5 |  |  |  |  |  |  |
Threshold percentage of stock price trigger |  | 98.00% |  |  |  |  |  |  |
2025 Convertible Notes | Convertible Debt |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Aggregate principal amount |  | $ 575,000,000 |  |  |  |  |  |  |
Interest rate (percentage) |  | 0.50% |  |  |  |  |  |  |
Long-term debt, fair value |  |  |  | 235,200,000 |  |  |  |  |
2025 Notes Under 13-day Purchase Option | Convertible Debt |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Aggregate principal amount |  | $ 75,000,000 |  |  |  |  |  |  |
2022 Convertible Notes |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  |  |  |  |  |  | $ 300,000,000
Interest rate (percentage) |  |  |  |  |  | 0.625% |  |  | 0.625%
Repurchased face amount |  | 130,300,000 |  |  |  |  |  |  |
Repurchased amount, accrued interest |  | 100,000 |  |  |  |  |  |  |
Conversion rate, number of shares per $1,000 of principal | shares |  |  |  |  |  |  |  |  | 4.8163
Conversion price (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  | $ 207.63
Nonconvertible debt borrowing rate at the date of issuance (percentage) |  |  |  |  |  |  |  |  | 5.36%
Convertible debt, noncurrent |  |  |  |  |  |  |  |  | $ 238,400,000
Carrying amount of debt, equity component |  |  |  |  |  |  |  |  | 61,600,000
Debt issuance costs, gross |  |  |  |  |  |  |  |  | 9,300,000
Debt issuance costs, liability component |  |  |  |  |  |  |  |  | 7,400,000
Debt issuance costs, equity component |  |  |  |  |  |  |  |  | $ 1,900,000
Interest expense |  |  |  |  | 800,000 | $ 9,500,000 |  |  |
Interest expense, excluding amortization |  |  |  |  | $ 400,000 | $ 1,100,000 |  |  |
Interest rate |  |  |  |  | 0.625% | 0.625% |  |  |
Amortization of debt issuance costs |  |  |  |  | $ 400,000 | $ 900,000 |  |  |
Amortization of debt discount |  |  |  |  |  | 7,500,000 |  |  |
Repayments of convertible debt | $ 169,700,000 | 234,000,000 |  | 0 | 169,659,000 | $ 0 |  |  |
Extinguishment of debt |  | 126,000,000 |  |  |  |  |  |  |
Repurchase of convertible debt, reduction to additional paid-in capital |  | $ 107,900,000 |  |  |  |  |  |  |
Loss on debt extinguishment |  |  | $ 7,800,000 |  |  |  |  |  |
Credit Agreement | Line of Credit | Delayed Draw Term Loan |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Interest expense |  |  |  | $ 22,200,000 | 18,200,000 |  |  |  |
Amortization of debt issuance costs |  |  |  |  | 2,000,000 |  |  |  |
Amortization of debt discount |  |  |  |  | 1,500,000 |  |  |  |
Credit Agreement | Line of Credit | Delayed Draw Term Loan | LIBOR |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Interest expense, excluding amortization |  |  |  |  | $ 9,600,000 |  |  |  |

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