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INCOME TAXES - Schedule of Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Mar. 31, 2024 | Mar. 31, 2023 | Mar. 31, 2022
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Deferred Tax Assets, Net [Abstract] |  |  |  |
Deferred Tax Assets, Operating Loss Carryforwards |  | $ 54,280 | $ 56,675 | $ 59,636
Deferred Tax Assets, Deferred Income |  | 27,431 | 25,903 | 29,206
Deferred Tax Asset, In-Process Research and Development |  | 27,785 | 23,949 | 16,289
Deferred Tax Assets, Operating Loss Carryforwards, Foreign |  | 15,888 | 15,894 | 16,085
Deferred Tax Asset, Interest Carryforward |  | 16,572 | 13,162 | 12,296
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Other |  | 4,685 | 4,494 | 4,450
Deferred Tax Assets, Lease Obligations |  | 2,269 | 2,384 | 2,514
Deferred Tax Assets, Inventory |  | 2,426 | 2,715 | 1,701
Deferred Tax Assets, Goodwill and Intangible Assets |  | 1,344 | 961 | 853
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Warranty Reserves |  | 365 | 495 | 447
Deferred Tax Assets, Gross, Total | $ 12,700 | 153,045 | 146,632 | 143,477
Deferred Tax Assets, Valuation Allowance | (11,800) | (147,674) | (141,218) | (138,086)
Deferred Tax Assets, Net of Valuation Allowance, Total | $ 900 | 5,371 | 5,414 | 5,391
Deferred Tax Liabilities, Net [Abstract] |  |  |  |
Deferred Tax Liabilities, Property, Plant and Equipment |  | (2,038) | (2,009) | (1,921)
Deferred Tax Liabilities, Leasing Arrangements |  | (1,929) | (2,128) | (2,439)
Deferred Tax Liabilities, Other |  | (1,130) | (548) | (1,048)
Deferred Tax Liabilities, Gross |  | (5,097) | (4,685) | (5,408)
Deferred Tax Assets, Net, Total |  | $ 274 | $ 729 |
Deferred Tax Liabilities, Net |  |  |  | $ (17)

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