Quarterly report pursuant to Section 13 or 15(d)

Note 10 - Leases - Operating Lease Expense (Details)

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Note 10 - Leases - Operating Lease Expense (Details) - USD ($)
 3 Months Ended 6 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Mar. 31, 2021
Mar. 31, 2020
Total lease expense under ASC 842 $ 307,794 $ 274,272 $ 616,128 $ 516,266
Cost of Sales [Member]        
Total lease expense under ASC 842 252,459 218,874 505,395 404,502
Selling, General and Administrative Expenses [Member]        
Total lease expense under ASC 842 $ 55,335 $ 55,398 $ 110,733 $ 111,764