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STOCK-BASED COMPENSATION - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2024 | Sep. 30, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |
Stock-based compensation costs capitalized | $ 0 | $ 0
Weighted average estimated fair value of stock options granted (in dollars per share) | $ 1.44 | $ 5.72
Aggregate intrinsic value exercised | $ 23 | $ 230
2021 Equity Incentive Plan |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |
Number of shares remained available for grants (in shares) | 271,087 |
Stock Options |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |
Vesting period ( in years ) | 3 years |
Period over which options expire | 10 years |
Expiration period, post termination | 30 days |
Stock Options | Envigo |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |
Period over which options expire | 10 years |
Expiration period, post termination | 1 year |
Restricted Shares (in thousands) |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |
Vesting period ( in years ) | 2 years |
Shares granted, value | $ 0 |
Unrecognized compensation expense expected to vest | $ 11 |
Time over which unrecognized compensation expense expected to vest (in years) | 4 months 17 days |
Fair value of restricted shares granted | $ 0 | 102
Fair value of restricted shares vested | 146 | 620
Restricted Stock Units (in thousands) |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |
Shares granted, value | 0 |
Unrecognized compensation expense expected to vest | $ 6,438 |
Time over which unrecognized compensation expense expected to vest (in years) | 1 year 10 months 24 days |
Fair value of restricted shares granted | $ 1,513 | 3,908
Fair value of restricted shares vested | $ 1,666 | $ 940
Restricted Stock Units (in thousands) | Minimum |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |
Vesting period ( in years ) | 1 year |
Restricted Stock Units (in thousands) | Maximum |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |
Vesting period ( in years ) | 5 years |

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