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Note 13 - Leases (Details Textual) - USD ($) | 6 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2020 | Dec. 31, 2019 | Jan. 01, 2019
Assets, Noncurrent, Excluding Property, Plant, and Equipment | $ 531,389 | $ 1,165,295 |
Liabilities, Current, Total | 18,602,388 | 27,524,405 |
Liabilities, Noncurrent, Total | 2,900,777 | $ 2,670,171 |
Operating Lease, Expense | 416,000 |  |
Operating Lease, Payments | $ 416,000 |  |
Accounting Standards Update 2016-02 [Member] |  |  |
Assets, Noncurrent, Excluding Property, Plant, and Equipment |  |  | $ 2,800,000
Liabilities, Current, Total |  |  | 1,100,000
Liabilities, Noncurrent, Total |  |  | $ 1,700,000

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