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Note 5 - Line of Credit and Loans - Estimated Future Amortization Expense (Details) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Amortization of deferred financing cost $ 943,377 $ 249,125
Interest expense associated with the credit facility and loan 1,578,878 851,544
Other finance fees associated with credit facility and loan $ 125,000