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Note 13 - Leases - Supplemental Cash Flow Information Related to Operating Leases (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2020
Cash payments for operating leases $ 1,477,218 $ 4,862,521
New operating lease assets obtained in exchange for operating lease liabilities $ 79,451 $ 744,397