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

Fair value of share-based awards granted during period.

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Period post termination in that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Value, after forfeiture, of shares granted under share-based payment arrangement. Excludes employee stock ownership plan (ESOP).

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