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2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Sep. 30, 2022
--- | --- | ---
Net Investment Income [Line Items] |  |
Derivative Asset | $ 2,697 | $ 2,956
Amount [Member] |  |
Net Investment Income [Line Items] |  |
Derivative Asset | 2,697 | 2,956
Investment in debt security | 726 | 610
Total | 3,423 | 3,566
Level 1 |  |
Net Investment Income [Line Items] |  |
Derivative Asset | 0 | 0
Investment in debt security | 0 | 0
Total | 0 | 0
Level 2 |  |
Net Investment Income [Line Items] |  |
Derivative Asset | 0 | 0
Investment in debt security | 0 | 0
Total | 0 | 0
Level 3 |  |
Net Investment Income [Line Items] |  |
Derivative Asset | 2,697 | 2,956
Investment in debt security | 726 | 610
Total | $ 3,423 | $ 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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(1)(a)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481830/320-10-45-1 + Details
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