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Note 13 - Leases (Details Textual) - USD ($)
1 Months Ended 9 Months Ended
Jul. 31, 2020
Sep. 30, 2020
Dec. 31, 2019
Jan. 01, 2019
Assets, Noncurrent, Excluding Property, Plant, and Equipment   $ 438,061 $ 1,165,295  
Liabilities, Current, Total   17,604,044 27,524,405  
Liabilities, Noncurrent, Total   2,611,518 $ 2,670,171  
Operating Lease, Expense   471,000    
Operating Lease, Payments   $ 471,000    
Lease Agreement for a Building [Member]        
Operating Lease, Payment Per Month $ 38,000      
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