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FAIR VALUE DISCLOSURES - Contingent Consideration (Details) |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Apr. 05, 2024 USD ($) installment | Mar. 31, 2025 USD ($) | Mar. 31, 2024 USD ($) | Mar. 31, 2025 USD ($) | Mar. 31, 2024 USD ($) | Sep. 30, 2024 USD ($)
Changes in the fair value of the contingent consideration: |  |  |  |  |  |
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  |  | Selling, General and Administrative Expense |  |
Operating income |  |  |  | $ (1,453,452) |  |
Mandatorily Redeemable Non-Controlling Interest |  |  |  |  |  |
Changes in the fair value of the contingent consideration: |  |  |  |  |  |
Fair value of MRNCI, beginning of period |  | $ 8,406,312 | $ 9,690,575 | 8,211,500 | $ 9,490,831 |
Change in fair value |  | 272,856 | 134,389 | $ 467,668 | 334,133 |
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  |  | Change in Fair Value of Mandatorily Redeemable Non-controlling Interest |  |
Fair value of MRNCI, end of period |  | $ 8,679,168 | $ 9,824,964 | $ 8,679,168 | $ 9,824,964 |
Burklund Distributors, Inc |  |  |  |  |  |
Changes in the fair value of the contingent consideration: |  |  |  |  |  |
Fair value of MRNCI, beginning of period |  |  |  | 1,453,452 |  |
Change in fair value |  |  |  | (1,453,452) |  |
Current portion of contingent consideration at fair value as of September 2024 |  |  |  |  |  | $ 710,270
Noncurrent portion at fair value |  |  |  |  |  | 743,182
Contingent consideration payable in cash | $ 3,000,000.0 |  |  |  |  |
Contingent consideration, number of installments | installment | 2 |  |  |  |  |
Operating income |  |  |  | $ 1,500,000 |  |
Difference in fair value and estimated due |  |  |  |  |  | $ 200,000

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