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Leases (Schedule of Supplemental Cash Flow Information) (Details) - USD ($)
9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Cash used in operating activities    
Operating leases $ 835,314 $ 882,659
Finance leases 13,991 45,185
Cash used in financing activities    
Finance leases 236,563 467,592
ROU assets obtained in exchange for lease obligations:    
Operating leases $ 748,294