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FAIR VALUE MEASUREMENTS - Narrative (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Mar. 31, 2025 | Sep. 30, 2024 | Mar. 31, 2024
--- | --- | --- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Cash, cash equivalents, restricted cash | $ 76,684 | $ 89,324 | $ 117,867 | $ 116,723
Cash and cash equivalents | 75,872 | 88,050 | 117,400 |
Restricted cash and equivalents |  |  | $ 500 |
Level 2 | 2028 Notes | Convertible debt |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Fair value | $ 176,300 | $ 171,100 |  |

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