FAIR VALUE MEASUREMENTS - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - Recurring Basis [Member] - USD ($) $ in Thousands	Sep. 30, 2025	Sep. 30, 2024
Assets:
Investment in Rubicon at fair value	$ 4,631	$ 1,518
Investment in other marketable securities	283	56
Asets	4,914	1,574
Liabilities:
Contingent earnout liabilities	3,742	3,381
Liabilities	3,742	3,381
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets:
Investment in Rubicon at fair value	4,631	1,518
Investment in other marketable securities	283	56
Asets	4,914	1,574
Liabilities:
Contingent earnout liabilities	1,143	2,100
Liabilities	1,143	2,100
Significant Other Observable Inputs (Level 2) [Member]
Assets:
Investment in Rubicon at fair value	0	0
Investment in other marketable securities	0	0
Asets	0	0
Liabilities:
Contingent earnout liabilities	0	0
Liabilities	0	0
Significant Unobservable Inputs (Level 3) [Member]
Assets:
Investment in Rubicon at fair value	0	0
Investment in other marketable securities	0	0
Asets	0	0
Liabilities:
Contingent earnout liabilities	2,599	1,281
Liabilities	$ 2,599	$ 1,281

The fair value portion of contingent consideration due in a business combination.

No definition available.

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- Definition

Fair value portion of asset recognized for present right to economic benefit.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
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-Name Accounting Standards Codification
-Section 55
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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- References

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- Definition

Fair value of financial obligations, including, but not limited to, debt instruments, derivative liabilities, federal funds purchased and sold under agreements to repurchase, securities loaned or sold under agreements to repurchase, financial instruments sold not yet purchased, guarantees, line of credit, loans and notes payable, servicing liability, and trading liabilities.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-11

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 825
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Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
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-Name Accounting Standards Codification
-Section 50
-Paragraph 2
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
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Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
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-Name Accounting Standards Codification
-Section 50
-Paragraph 2E
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2E

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- Definition

Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

+ References

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- Definition

Fair value portion of investments in an entity not consolidated. Includes, but is not limited to, investments in an entity that is affiliated with the reporting entity by means of direct or indirect ownership, an entity in which the reporting entity shares control of the entity with another party or group, an entity which the company has significant influence, but does not have control and subsidiaries that are not required to be consolidated and are accounted for using the equity or cost method.

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