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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Reconciliation of the beginning and ending balance of the assets and liabilities measured at fair value on recurring basis (Details) - USD ($) | 6 Months Ended
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Mar. 31, 2025 | Mar. 31, 2024 | Mar. 31, 2023
Fair Value Disclosures |  |  |
Beginning balance | $ 8,323,587 | $ 13,943,019 | $ 19,470,400
Change in fair value | (3,433,407) | 1,066,927 | 245,800
Ending balance | 4,890,180 | $ 15,009,946 | $ 19,716,200
Fair value discount rate valuation of trading securities |  | 28.00% |
Transfer between level 1and level 2 | 0 |  |
Asset, transfer into (out of) of level 3 | $ 0 |  |

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- Definition Amount of transfers of financial instrument classified as a asset or liability transfers between level 1 and level 2 of the fair value hierarchy. + References No definition available. + Details
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- Definition Amount of transfer of financial instrument classified as an asset into (out of) level 3 of the fair value hierarchy. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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- Definition Amount of increase (decrease) of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (asset), measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 + Details
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