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DEBT AND FINANCING ARRANGEMENTS - 2020 Convertible Senior Notes (Narrative) (Details) $ / shares in Units, $ in Thousands |  |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | --- | ---
Apr. 01, 2024 USD ($) $ / shares | Sep. 22, 2020 USD ($) numberOfDays $ / shares | Sep. 30, 2024 USD ($) | Sep. 30, 2023 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2023 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, face amount |  | $ 230,000 |  |  |  |
Stated percentage |  | 1.00% |  |  |  |
Gain on debt extinguishment |  |  | $ 0 | $ 0 | $ 13,017 | $ 0
Threshold consecutive trading days | numberOfDays |  | 10,000 |  |  |  |
Threshold percentage of stock price trigger |  | 98.00% |  |  |  |
Conversion ratio |  | 11.7457 |  |  |  |
Conversion price (in dollars per share) | $ / shares |  | $ 85,140 |  |  |  |
Redemption period, days before maturity date |  | 36 days |  |  |  |
Redemption price, percentage |  | 100.00% |  |  |  |
Threshold principal outstanding amount for partial redemption |  |  | 75,000 |  | 75,000 |
Debt Conversion Scenario One |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Threshold trading days | numberOfDays |  | 20,000 |  |  |  |
Threshold consecutive trading days | numberOfDays |  | 30,000 |  |  |  |
Threshold percentage of stock price trigger |  | 130.00% |  |  |  |
Debt Conversion Scenario Two |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Threshold trading days | numberOfDays |  | 5,000 |  |  |  |
Debt Conversion Scenario Three |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Threshold trading days | numberOfDays |  | 20 |  |  |  |
Threshold consecutive trading days | numberOfDays |  | 30 |  |  |  |
Threshold percentage of stock price trigger |  | 130.00% |  |  |  |
Convertible Senior Notes, Additional Principal Option |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, face amount |  | $ 30,000 |  |  |  |
2020 Convertible Senior Notes, net | Convertible Debt |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, repurchased face amount |  |  | 183,900 |  | $ 183,900 |
Gain on debt extinguishment |  |  | 13,000 |  |  |
2024 Convertible Senior Notes | Convertible Debt |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, face amount | $ 172,500 |  |  |  |  |
Stated percentage | 4.25% |  |  |  |  |
Proceeds from issuance of 2024 Convertible Senior Notes | $ 166,800 |  | $ 169,300 |  |  |
Conversion ratio | 0.0554939 |  |  |  |  |
Conversion price (in dollars per share) | $ / shares | $ 18.02 |  |  |  |  |

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