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Note 15 - Leases - Operating Lease Balance Sheet Information (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2021
Dec. 31, 2020
Operating lease cost $ 63,973 $ 191,919  
Total lease cost 63,973 191,919  
Operating ROU assets 313,607 313,607 $ 487,325
Operating lease liabilities, current portion 206,004 206,004 234,309
Operating lease liabilities, non-current portion 118,800 118,800 $ 264,163
Total operating lease liabilities $ 324,804 $ 324,804  
Weighted average remaining lease term (in years) – operating leases (Year) 1 year 7 months 17 days 1 year 7 months 17 days  
Weighted average discount rate – operating leases 5.50% 5.50%