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RESTATEMENT OF PREVIOUSLY ISSUED FINANCIAL STATEMENTS - Narrative (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
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | $ 70,469 | $ 75,680 | $ 141,812 | $ 168,174 | $ 311,600 | $ 422,077 | $ 383,432
Net loss before income taxes | (13,157) | (2,798) | (33,742) | (11,410) | (40,575) | (16,428) | 39,696
1 year or less | 69,369 |  | 69,369 |  | 78,511 | 79,807 | 87,128
Contract with Customer, Liability, Noncurrent | 37,164 |  | 37,164 |  | 38,176 | 35,495 | 39,788
Fair Value Adjustment of Warrants | (3,550) | (4,402) | (5,216) | (5,128) | (5,137) | (10,250) | (60,030)
Derivative Liability, Current | 2,499 |  | 2,499 |  | 4,046 | 7,989 | 18,237
Additional Paid in Capital, Common Stock | 709,667 |  | 709,667 |  | 708,027 | 703,259 | 625,380
Previously Reported [Member] |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax |  |  |  |  |  | 412,752 | 372,827
Net loss before income taxes |  |  |  |  |  | (36,003) | (30,939)
1 year or less |  |  |  |  |  | 82,504 | 86,517
Contract with Customer, Liability, Noncurrent |  |  |  |  |  | 43,306 | 41,580
Fair Value Adjustment of Warrants |  |  |  |  |  | 0 | 0
Derivative Liability, Current |  |  |  |  |  | 0 | 0
Additional Paid in Capital, Common Stock |  |  |  |  |  | 723,492 | 645,613
Revision of Prior Period, Adjustment [Member] |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax |  |  |  |  |  | 9,325 | 10,605
Net loss before income taxes |  |  |  |  |  | 19,575 | 70,635
1 year or less |  |  |  |  |  | (2,697) | 611
Contract with Customer, Liability, Noncurrent |  |  |  |  |  | (7,811) | (1,792)
Fair Value Adjustment of Warrants |  |  |  |  |  | (10,250) | (60,030)
Derivative Liability, Current |  |  |  |  |  | 7,989 | 18,237
Additional Paid in Capital, Common Stock |  |  |  |  |  | (20,233) | (20,200)
Revision of Prior Period, Adjustment [Member] | Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2014-09 |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |
Net loss before income taxes |  |  |  |  |  | 9,300 | 10,600
Revision of Prior Period, Adjustment [Member] | Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2017-12 |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |
Net loss before income taxes |  |  |  |  |  | 10,200 | 60,000
Product [Member] |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 36,785 | 42,947 | 77,779 | 101,522 | 174,879 | 274,854 | 230,814
Product [Member] | Previously Reported [Member] |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax |  |  |  |  |  | 266,537 | 223,761
Product [Member] | Revision of Prior Period, Adjustment [Member] |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax |  |  |  |  |  | 8,317 | 7,053
Service |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | $ 27,174 | $ 28,161 | $ 53,727 | $ 56,476 | $ 113,868 | 124,599 | 131,967
Service | Revision of Prior Period, Adjustment [Member] |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax |  |  |  |  |  | $ 1,000 | $ 3,600

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