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Note 9 - Fair Value Measurements - Summary of the Fair Value of Financial Assets and Liabilities Not Adjusted to Fair Value (Details) - USD ($) | Dec. 31, 2024 | Sep. 30, 2024
--- | --- | ---
Current maturities of long-term debt | $ 26,200,000 | $ 800,000
Reported Value Measurement [Member] |  |
Current maturities of long-term debt | 26,200,000 | 800,000
Notes payable | 111,595,000 | 136,955,000
Total Liabilities fair value | 137,795,000 | 137,755,000
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Current maturities of long-term debt | 0 | 0
Notes payable | 0 | 0
Total Liabilities fair value | 0 | 0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Current maturities of long-term debt | 0 | 0
Notes payable | 0 | 0
Total Liabilities fair value | 0 | 0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Current maturities of long-term debt | 26,358,465 | 800,000
Notes payable | 107,587,769 | 135,471,275
Total Liabilities fair value | $ 133,946,234 | $ 136,271,275

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- Definition Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt classified as current. Excludes lease obligation. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(20)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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