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Note 12 - Segments (Tables)
3 Months Ended
Mar. 31, 2024
Notes Tables  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
    Three Months Ended March 31, 2024  
    Pittsburgh     Birmingham    

Eagan

   

Corporate

   

Total

 

Revenue

  $ 4,858     $ 11,009     $ 403,779     $ -     $ 419,646  

Depreciation and amortization

    (32,097 )     (120,794 )     (7,823 )     (1,851 )     (162,565 )

Segment loss

  $ (1,196,065 )   $ (465,162 )   $ (189,576 )   $ (2,368,040 )   $ (4,218,843 )
    March 31, 2024  
    Pittsburgh     Birmingham    

Eagan

   

Corporate

   

Total

 

Assets

  $ 3,135,259     $ 840,518     $ 1,612,484     $ 5,012,926     $ 10,601,187  
    Three Months Ended March 31, 2023  
    Pittsburgh     Birmingham    

Eagan

   

Corporate

   

Total

 

Revenue

  $ 10,627     $ 13,649     $ 215,619     $ -     $ 239,895  

Depreciation and amortization

    (111,822 )     (117,600 )     (6,778 )     (1,654 )     (237,854 )

Segment loss

  $ (1,159,105 )   $ (482,696 )   $ (285,397 )   $ (1,494,604 )   $ (3,421,802 )
    December 31, 2023  
   

Pittsburgh

   

Birmingham

   

Eagan

   

Corporate

   

Total

 

Assets

  $ 3,263,270     $ 981,914     $ 1,390,031     $ 8,782,034     $ 14,417,249