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4. Prepayments And Other Assets (Sept 2020 Note) (Details) - USD ($)
Sep. 30, 2020
Dec. 31, 2019
Dec. 31, 2018
Prepayments And Other Assets $ 2,734,382 $ 1,258,700 $ 928,682
Vendor Prepayments [Member]      
Prepayments And Other Assets 1,828,531 1,070,788 776,478
Prepaid Services and Fees [Member]      
Prepayments And Other Assets 268,655 187,912 $ 152,204
Deferred Financing Asset [Member]      
Prepayments And Other Assets 630,805 0  
Other Assets [Member]      
Prepayments And Other Assets $ 6,391 $ 20,028