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INCOME TAXES - Schedule of Income Tax Rate Reconciliation Amount (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Mar. 31, 2024 | Mar. 31, 2023 | Mar. 31, 2022
Income Tax Disclosure [Abstract] |  |  |  |  |  |  |
Federal statutory rate (as a percent) |  |  |  |  | 21.00% |  |
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount |  |  |  |  | $ (8,507) | $ (3,450) | $ 8,341
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Amount |  |  |  |  | 1,102 | 1,945 | 195
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount |  |  |  |  | 768 | 1,498 | 1,941
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount |  |  |  |  | 264 | 586 | 1,761
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount |  |  |  |  | (860) | (124) | (133)
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount |  |  |  |  | 6,313 | 2,890 | (7,396)
Effective Income Tax Rate Reconciliation, Uncertain Tax Positions, Amount |  |  |  |  | (8,010) | (3,791) | (6,349)
Income Tax Reconciliation, Credit Monetization |  |  |  |  | 0 | 0 | (2,100)
Effective Income Tax Rate Reconciliation, Expiration Of Attributes, Amount |  |  |  |  | 10,901 | 5,733 | 18,345
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount |  |  |  |  | (1,169) | (1,582) | (2,094)
Effective Income Tax Rate Reconciliation, Derivative Instrument Adjustments |  |  |  |  | (1,093) | (2,152) | (12,606)
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount |  |  |  |  | 1,002 | 387 | 1,436
Income Tax Expense (Benefit), Total | $ 370 | $ 533 | $ 605 | $ 1,063 | $ 711 | $ 1,940 | $ 1,341

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