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COMMON STOCK - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  | 6 Months Ended | 12 Months Ended |  |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Apr. 22, 2022 | Feb. 01, 2021 | Sep. 30, 2024 | Sep. 30, 2023 | Mar. 31, 2024 | Mar. 31, 2023 | Mar. 31, 2022 | Aug. 26, 2024 | Aug. 15, 2024 | Jun. 30, 2023 | Jun. 01, 2023 | Dec. 30, 2022 | Dec. 29, 2022 | Apr. 02, 2022 | Mar. 31, 2021 | Jun. 30, 2020 | Jun. 16, 2020
Share-based compensation expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, shares authorized (in shares) |  |  | 225,000,000 |  | 225,000,000 | 225,000,000 | 225,000,000 |  |  |  |  |  |  | 125,000,000 |  |  |
Repayments of secured debt |  |  | $ 13,537 | $ 3,247 | $ 5,747 | $ 24,596 | $ 94,301 |  |  |  |  |  |  |  |  |  |
Total shares reserved for future issuance (in shares) |  |  |  |  | 38,377 |  |  |  |  |  |  |  |  |  |  |  |
Common stock, par value (in dollars per share) |  |  | $ 0.01 |  | $ 0.01 | $ 0.01 | $ 0.01 | $ 0.01 | $ 0.01 |  |  |  |  |  |  |  |
Senior Secured Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum registrable securities to request a S-1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 40.00%
June 2020 Warrants [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrant exercise price (in dollars per share) |  |  |  |  | 55.40 | 55.80 | 60.00 |  |  |  |  |  |  |  |  |  |
June 2020 Warrants [Member] | Warrant Repricing Feature |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrant exercise price (in dollars per share) | $ 55.40 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
June 2020 Warrants [Member] | Advisor |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of warrant or right, additional warrants issued (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,500 |
Warrant exercise price (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 60.00 |
December 2018 Warrants [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of warrant or right, additional warrants issued (in shares) | 1,021 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrant exercise price (in dollars per share) | $ 26.60 |  |  |  | 26.60 | $ 26.60 | $ 26.60 |  |  |  |  |  |  |  |  |  |
June 2023 Warrants [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrant exercise price (in dollars per share) |  |  | 6.20 |  | $ 20.00 |  |  |  |  |  | $ 20.00 |  |  |  |  |  |
June 2023 Warrants [Member] | Advisor |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of warrant or right, additional warrants issued (in shares) |  |  |  |  |  |  |  |  |  | 2,500 |  |  |  |  |  |  |
Warrant exercise price (in dollars per share) |  |  |  |  |  |  |  |  |  | $ 20.00 |  |  |  |  |  |  |
Amended And Restated Warrants |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrant exercise price (in dollars per share) |  |  |  |  |  |  |  | $ 6.20 |  |  |  |  |  |  |  |  |
Warrants called in period (in shares) |  |  |  |  |  |  |  | 430,711 |  |  |  |  |  |  |  |  |
Minimum | June 2020 Warrants [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrant exercise price (in dollars per share) |  |  | 6.20 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum | December 2018 Warrants [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrant exercise price (in dollars per share) |  |  | 6.20 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum | June 2020 Warrants [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrant exercise price (in dollars per share) |  |  | 54.19 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum | December 2018 Warrants [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrant exercise price (in dollars per share) |  |  | $ 26.04 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period |  |  |  |  | 3 years |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized compensation cost related to stock options granted |  |  |  |  | $ 2,600 |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average period for recognition (in years) |  |  |  |  | 2 years |  |  |  |  |  |  |  |  |  |  |  |
Awards vested, fair value |  |  |  |  | $ 6,400 | $ 5,200 | $ 5,000 |  |  |  |  |  |  |  |  |  |
Shares granted (in shares) |  |  |  |  | 60,000,000 | 145,000,000 | 140,000,000 |  |  |  |  |  |  |  |  |  |
Employee Stock Purchase Plan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares available for future equity grants (in shares) |  |  |  |  | 4,400,000 | 4,400,000 | 34,400,000 |  |  |  |  |  |  |  | 53,900,000 |  |
Common stock purchase price, percentage |  |  |  |  | 85.00% |  |  |  |  |  |  |  |  |  |  |  |
Market (PSUs) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized compensation cost related to stock options granted |  |  |  |  | $ 600 |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average period for recognition (in years) |  |  |  |  | 1 year |  |  |  |  |  |  |  |  |  |  |  |
Shares granted (in shares) |  |  |  |  | 6,000 | 20,000 | 30,000 |  |  |  |  |  |  |  |  |  |
Performance PSUs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average period for recognition (in years) |  |  |  |  | 1 year |  |  |  |  |  |  |  |  |  |  |  |
Shares granted (in shares) |  |  |  |  | 46,000 | 45,000 | 0 |  |  |  |  |  |  |  |  |  |
Performance Shares [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Awards vested, fair value |  |  |  |  | $ 1,000 | $ 1,900 | $ 3,900 |  |  |  |  |  |  |  |  |  |
2012 Long-Term Incentive Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares authorized (in shares) |  |  |  |  | 400,000 |  |  |  |  |  |  |  |  |  |  |  |
Shares available for future equity grants (in shares) |  |  |  |  | 300,000 |  |  |  |  |  |  |  |  |  |  |  |
2012 Long-Term Incentive Plan | Stock options, PSUs, and Restricted Shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares outstanding (in shares) |  |  |  |  | 100,000 |  |  |  |  |  |  |  |  |  |  |  |
2021 Inducement Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, shares authorized (in shares) |  |  |  |  |  |  |  |  |  |  |  | 75,000 | 38,500 |  |  |  |
2021 Inducement Plan | Stock options |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Plan term |  | 7 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2021 Inducement Plan | Stock options | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period |  | 2 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2021 Inducement Plan | Stock options | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period |  | 3 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2021 Inducement Plan | Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Plan term |  | 7 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2021 Inducement Plan | Restricted Stock Units (RSUs) [Member] | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period |  | 2 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2021 Inducement Plan | Restricted Stock Units (RSUs) [Member] | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period |  | 3 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rights Offering |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares issued in transaction (in shares) | 1,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of stock, price per share (in dollars per share) | $ 45 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum available amount | $ 66,200 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of secured debt | $ 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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