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Note 12 - Fair Value Measurements - Summary of the Fair Value of Financial Assets and Liabilities Not Adjusted to Fair Value (Details) - USD ($)
Dec. 31, 2021
Sep. 30, 2021
Current maturities of long-term debt $ 28,540,200 $ 7,000,000
Reported Value Measurement [Member]    
Current maturities of long-term debt 28,540,200 7,000,000
Notes payable 105,500,000 116,110,200
Total Liabilities fair value 134,040,200 123,110,200
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 28,680,537 7,000,000
Notes payable 112,866,499 124,691,896
Total Liabilities fair value $ 141,547,036 $ 131,691,896