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STOCK-BASED COMPENSATION - Narrative (Details) $ in Millions |  |  |  | 1 Months Ended | 3 Months Ended | 6 Months Ended | 9 Months Ended |  |  |  |  |
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Apr. 30, 2021 tranche | Jan. 01, 2021 shares | Feb. 08, 2018 | Nov. 06, 2024 USD ($) shares | Dec. 31, 2022 | Aug. 31, 2022 tranche shares | Jul. 31, 2022 shares | Mar. 31, 2022 shares | Sep. 30, 2021 shares | Jul. 31, 2021 shares | Apr. 30, 2021 tranche shares | Apr. 30, 2020 shares | Sep. 30, 2024 USD ($) shares | Sep. 30, 2023 USD ($) | Jun. 30, 2024 | Sep. 30, 2024 USD ($) shares | Sep. 30, 2023 USD ($) | Dec. 31, 2023 shares | Jul. 13, 2023 shares | Jul. 18, 2022 shares | Jan. 01, 2020 shares | Jan. 31, 2018 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares authorized (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 961,558 |  |  |  |
Number of shares authorized, annual increase |  |  |  |  |  |  |  |  |  |  |  |  | 5.00% |  |  | 5.00% |  |  |  |  |  |
Number of additional shares authorized (in shares) |  | 1,986,417 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease obligation incurred | $ |  |  |  |  |  |  |  |  |  |  |  |  | $ 1.2 | $ 0.6 |  | $ 3.7 | $ 1.6 |  |  |  |  |
2022 Inducement Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock reserved for future issuance (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,500,000 |  |
Share-based payment arrangement, additional shares allowable under the plan (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 800,000 |  |  | 350,000
Share-based payment arrangement, number of shares available (in shares) |  |  |  |  |  |  |  |  |  |  |  |  | 709,849 |  |  | 709,849 |  |  |  |  |  |
Share-based Compensation Award, Tranche One |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based payment arrangement, percentage of grants in period |  |  |  |  |  | 25.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Award, Tranche Two |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based payment arrangement, percentage of grants in period |  |  |  |  |  | 25.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted stock units |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Compensation cost not yet recognized |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 years 3 days | 1 year 5 months 1 day |  |  |  |  |  |
Granted (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,262,000 |  |  |  |  |  |
Unvested PSU (in shares) |  |  |  |  |  |  |  |  |  |  |  |  | 4,685,000 |  |  | 4,685,000 |  | 5,485,000 |  |  |  |
Restricted stock units | Share-based Compensation Award, Tranche One |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Granted (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,262,166 |  |  |  |  |  |
Restricted stock units | Share-based Compensation Award, Tranche One | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Award vesting period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4 years |  |  |  |  |  |
ESPP |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares authorized, annual increase |  |  |  |  | 1.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ESPP, purchase price percentage |  |  | 85.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ESPP, number of shares authorized, annual increase (in shares) |  |  |  |  |  |  |  |  |  |  |  |  | 500,000 |  |  | 500,000 |  | 657,826,000 |  |  | 397,283 |
Shares issued (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 242,255 |  |  |  |  |  |
Performance-based RSUs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of tranches | tranche | 2 |  |  |  |  | 3 |  |  |  |  | 2 |  |  |  |  |  |  |  |  |  |  |
Share-based payment arrangement, awards vested, percentage |  |  |  |  |  |  |  |  |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |
Share-based payment arrangement, vesting conditions achievement period | 4 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Granted (in shares) |  |  |  |  |  | 25,248 | 100,990 | 269,202 |  |  | 110,236 | 476,608 |  |  |  |  |  |  |  |  |  |
Performance-based RSUs | Share-based Compensation Award, Tranche One |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of tranches | tranche |  |  |  |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based payment arrangement, awards vested, percentage |  |  |  |  | 25.00% |  |  |  |  | 50.00% |  | 50.00% |  |  |  |  |  |  |  |  |  |
Share-based payment arrangement, vesting conditions achievement period |  |  |  |  |  |  |  |  |  |  |  | 4 years |  |  |  |  |  |  |  |  |  |
Award vesting period |  |  |  |  |  |  |  |  |  |  | 12 months | 12 months |  |  |  |  |  |  |  |  |  |
Granted (in shares) |  |  |  |  |  |  |  |  | 6,666 | 34,344 | 55,118 | 443,276 |  |  |  |  |  |  |  |  |  |
Performance-based RSUs | Share-based Compensation Award, Tranche One | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based payment arrangement, achievement, percentage |  |  |  |  |  |  |  |  |  | 80.00% |  |  |  |  |  |  |  |  |  |  |  |
Performance-based RSUs | Share-based Compensation Award, Tranche One | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based payment arrangement, achievement, percentage |  |  |  |  |  |  |  |  |  | 99.999% |  |  |  |  |  |  |  |  |  |  |  |
Performance-based RSUs | Share-based Compensation Award, Tranche Two |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of tranches | tranche |  |  |  |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based payment arrangement, awards vested, percentage |  |  |  |  |  |  |  |  |  | 100.00% |  | 25.00% |  |  |  |  |  |  |  |  |  |
Award vesting period |  |  |  |  |  |  |  |  |  |  | 12 months | 6 months |  |  |  |  |  |  |  |  |  |
Granted (in shares) |  |  |  |  |  |  |  |  | 6,667 |  | 55,118 | 33,332 |  |  |  |  |  |  |  |  |  |
Performance-based RSUs | Share-based Compensation Award, Tranche Two | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based payment arrangement, achievement, percentage |  |  |  |  |  |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |
Performance-based RSUs | Share-based Payment Arrangement, Tranche Three |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based payment arrangement, awards vested, percentage |  |  |  |  |  |  |  |  |  |  |  | 25.00% |  |  |  |  |  |  |  |  |  |
Award vesting period |  |  |  |  |  |  |  |  |  |  | 6 months | 12 months |  |  |  |  |  |  |  |  |  |
Performance-based RSUs | Share-Based Payment Arrangement, Tranche Four |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Award vesting period |  |  |  |  |  |  |  |  |  |  | 12 months |  |  |  |  |  |  |  |  |  |  |
Granted (in shares) |  |  |  |  |  |  |  |  |  |  | 10,000 |  |  |  |  |  |  |  |  |  |  |
Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of additional shares authorized (in shares) |  |  |  | 2,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event | Restricted stock units |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Granted (in shares) |  |  |  | 680,600 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Compensation not yet recognized, awards other than options | $ |  |  |  | $ 2.9 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event | Restricted stock units | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Award vesting period |  |  |  | 2 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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