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Note 12 - Commitments and Contingencies (Details Textual) - USD ($)
Jan. 07, 2020
Jun. 27, 2019
Apr. 12, 2016
Dec. 31, 2019
Dec. 05, 2019
Aug. 29, 2019
Operating Lease, Weighted Average Remaining Lease Term       1 year 73 days    
Lessee, Operating Lease, Discount Rate       6.70%    
The Company's Delaware Action [Member]            
Property, Plant, and Equipment, Held-for-sale         $ 850,000  
Civil Action Complaint Against Frank Erhartic, Jr. [Member]            
Loss Contingency, Damages Sought, Value     $ 350,000      
Mt. Melrose LLC [Member]            
Equity Method Investment, Ownership Percentage   35.00%   35.00%   20.80%
Mt. Melrose LLC [Member] | Woodmont [Member]            
Equity Method Investment, Ownership Percentage           79.20%
Mt. Melrose LLC [Member] | Woodmont [Member] | The Company's Delaware Action [Member] | Subsequent Event [Member]            
Investment Income, Dividend $ 600,000          
Woodmont [Member] | Mt. Melrose LLC [Member]            
Percentage of Membership Interest in Subsidiary Sold   65.00%        
Proceeds from Divestiture of Interest in Consolidated Subsidiaries   $ 100,000        
Ownership Interest, Sold, Percent   65.00%        
Equity Method Investment, Ownership Percentage           20.80%