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Note 8 - Investments, Including Investments Accounted for Using the Equity Method (Tables)
9 Months Ended
Sep. 30, 2024
Notes Tables  
Investment [Table Text Block]
  

September 30,

  

December 31,

 
  

2024

  

2023

 
         

U.S. Treasury notes held to maturity

 $21,839,166  $19,195,228 

Common stock warrants of Sky Harbour Group Corporation

  17,369,503   5,558,241 
         

Total

 $39,208,669  $24,753,469 
  

September 30,

  

December 31,

 
  

2024

  

2023

 
         

U.S. Treasury securities held to maturity

 $4,091,464  $- 

Investments in special purpose entities

  41,746,754   64,697,093 

Preferred stock

  348,694   348,694 

Voting preferred stock of MyBundle TV Inc.

  3,000,000   3,000,000 

Voting common stock of CB&T Holding Corporation

  19,058,485   19,058,485 
         

Total

 $68,245,397  $87,104,272 
Debt Securities, Trading, and Equity Securities, FV-NI [Table Text Block]
      

Gross

     
      

Unrealized

  

Fair

 
  

Cost

  

Gain (Loss)

  

Value

 
             

Marketable equity securities, September 30, 2024

 $2,455,024  $(7,527) $2,447,497 
             

Marketable equity securities, December 31, 2023

 $2,279,723  $(69,686) $2,210,037 
Schedule of Available-for-Sale Securities Reconciliation [Table Text Block]
      

Gross

     
      

Unrealized

  

Fair

 
  

Cost

  

Gain (Loss)

  

Value

 
             

U.S. Treasury trading securities, September 30, 2024

 $15,315,570  $31,830  $15,347,400 
             

U.S. Treasury trading securities, December 31, 2023

 $47,162,564  $(49,905) $47,112,659 
Investments in and Advances to Affiliates [Table Text Block]
  

September 30,

  

December 31,

 
  

2024

  

2023

 
         

Beginning of year

 $94,244,788  $118,218,389 

Additional investments in unconsolidated affiliates

  21,000   19,500 

Transfer of interest

  (2,748,292)  - 

Sale of interest

  (1,569,498)  - 

Distributions received

  -   (271,355)

Reclassification to consolidated subsidiaries

  -   (15,832,981)

Equity in loss of unconsolidated affiliates

  (16,573,011)  (7,888,765)
         

End of period

 $73,374,987  $94,244,788 
Equity Method Investments [Table Text Block]
  

For the Three Months Ended

  

For the Nine Months Ended

 
  

September 30,

  

September 30,

 
  

2024

  

2023

  

2024

  

2023

 
                 

Revenue

 $5,354,244  $4,428,534  $13,658,650  $11,475,172 

Gross profit

  4,461,569   3,043,780   11,070,032   8,687,111 

Net loss from operations

  (4,891,567)  (3,295,459)  (15,050,857)  (12,743,869)

Net loss

  (20,725,451)  (1,848,653)  (37,738,983)  (9,296,091)