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Note 15 - Leases - Operating Lease Liability Maturity (Details) - USD ($)
Mar. 31, 2021
Dec. 31, 2020
2021 (9 months remaining) $ 193,165  
2022 187,594  
2023 89,225  
Total future lease payments 469,984  
Less: imputed interest (28,470)  
Total $ 441,514 $ 498,472