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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 ($)
Jun. 30, 2025
Sep. 30, 2024
Long-Term Debt, Current Maturities $ 2,534,514 $ 800,000
Reported Value Measurement [Member]    
Long-Term Debt, Current Maturities 2,534,514 800,000
Notes payable 134,965,486 136,955,000
Total Liabilities fair value 137,500,000 137,755,000
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]    
Long-Term Debt, Current Maturities 0 0
Notes payable 0 0
Total Liabilities fair value 0 0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]    
Long-Term Debt, Current Maturities 0 0
Notes payable 0 0
Total Liabilities fair value 0 0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member]    
Long-Term Debt, Current Maturities 2,534,514 800,000
Notes payable 131,790,067 135,471,275
Total Liabilities fair value $ 134,324,581 $ 136,271,275