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Note 3 - Home Services Subsidiary Divestiture (Details Textual) - USD ($)
12 Months Ended
May 24, 2019
Dec. 31, 2019
Dec. 31, 2018
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest, Total   $ (1,510,475) $ (915,163)
Income (Loss) from Discontinued Operations, Net of Tax, Offsetting Amount from Probable Royalties   21,629  
Discontinued Operations, Held-for-sale [Member]      
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest, Total   (1,510,475) $ (915,163)
Home Service [Member] | Discontinued Operations, Held-for-sale [Member]      
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest, Total   $ (1,158,732)  
Rooter Hero [Member]      
Proceeds from Sale of Productive Assets, Total $ 0    
Royalty Agreement, Percent of Revenue in First Year 7.50%    
Royalty Agreement, Percent of Revenue in Year Two Through Five 5.00%