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2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Sep. 30, 2022
--- | --- | ---
Net Investment Income [Line Items] |  |
Derivative asset | $ 1,685 | $ 2,956
Amount |  |
Net Investment Income [Line Items] |  |
Derivative asset | 1,685 | 2,956
Investment in debt security | 639 | 610
Contingent cash consideration | 4,840 |
Total | 7,164 | 3,566
Level 1 |  |
Net Investment Income [Line Items] |  |
Derivative asset | 0 | 0
Investment in debt security | 0 | 0
Contingent cash consideration | 4,840 |
Total | 4,840 | 0
Level 2 |  |
Net Investment Income [Line Items] |  |
Derivative asset | 0 | 0
Investment in debt security | 0 | 0
Contingent cash consideration | 0 |
Total | 0 | 0
Level 3 |  |
Net Investment Income [Line Items] |  |
Derivative asset | 1,685 | 2,956
Investment in debt security | 639 | 610
Contingent cash consideration | 0 |
Total | $ 2,324 | $ 3,566

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- Definition Amount, after allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), investment in debt security measured at amortized cost (held-to-maturity), and investment in debt security measured at fair value with change in fair value recognized in net income (trading). + References No definition available. + Details
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- Definition Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 22 -URI https://asc.fasb.org/extlink&oid=99393222&loc=SL20226052-175313 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13433-108611 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 + Details
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