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DEBT - Convertible Senior Notes due 2024 Narrative (Details) $ / shares in Units, shares in Thousands |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 05, 2019 USD ($) $ / shares shares | Mar. 31, 2021 USD ($) shares | Dec. 31, 2021 USD ($) shares | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
Debt Instrument [Line Items] |  |  |  |  |
Partial repurchase of convertible notes |  |  | $ 290,247,000 | $ 40,728,000 | $ 0
Loss on partial settlement of convertible notes |  |  | 56,497,000 | 3,037,000 | 0
Payment for bonds hedge |  |  | 286,235,000 | 89,056,000 | 36,313,000
Proceeds from sale of warrants |  |  | $ 220,800,000 | $ 71,552,000 | $ 29,818,000
Convertible Notes | Convertible Senior Notes Due 2024 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument face amount | $ 132,000,000 |  |  |  |
Interest rate | 1.00% |  |  |  |
Conversion ratio | 0.0487781 |  |  |  |
Debt conversion price (in USD per share) | $ / shares | $ 20.50 |  |  |  |
Proceeds from convertible debt | $ 128,000,000 |  |  |  |
Partial repurchase of convertible notes |  | $ 88,100,000 |  |  |
Repurchase amount |  | $ 25,500,000 |  |  |
Exercise of warrants related to convertible senior notes (in shares) | shares |  |  | 3,800 |  |
Equity component of convertible senior notes, net |  |  | $ 669,500,000 |  |
Convertible note, liability component |  |  | 79,500,000 |  |
Residual |  |  | 8,700,000 |  |
Write off of debt discount |  |  | 16,800,000 |  |
Write off of deferred debt issuance cost |  |  | 1,400,000 |  |
Loss on partial settlement of convertible notes |  |  | $ 9,600,000 |  |
Conversion shares (in shares) | shares | 6,400 |  |  |  |
Payment for bonds hedge | $ 36,300,000 |  |  |  |
Warrants sold (in shares) | shares | 6,400 |  |  |  |
Warrants issued, strike price (in USD per share) | $ / shares | $ 25.23 |  |  |  |
Proceeds from sale of warrants | $ 29,800,000 |  |  |  |
Convertible notes hedge transaction, shares received (in shares) | shares |  | 1,100 |  |  |
Convertible notes hedge settlements, shares received (in shares) | shares |  | 2,700 |  |  |
Debt converted |  | $ 62,600,000 |  |  |
Warrants unwound, shares issued (in shares) | shares |  | 3,800 |  |  |

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