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

June 30,

  

December 31,

 
  

2024

  

2023

 
         

U.S. Treasury notes held to maturity

 $18,872,661  $19,195,228 

Common stock warrants of Sky Harbour Group Corporation

  9,572,526   5,558,241 
         

Total

 $28,445,187  $24,753,469 
  

June 30,

  

December 31,

 
  

2024

  

2023

 
         

Investments in special purpose entities

 $55,883,386  $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

 $78,290,565  $87,104,272 
Debt Securities, Trading, and Equity Securities, FV-NI [Table Text Block]
      

Gross

     
      

Unrealized

  

Fair

 
  

Cost

  

Gain (Loss)

  

Value

 
             

Marketable equity securities, June 30, 2024

 $2,319,011  $66,972  $2,385,983 
             

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, June 30, 2024

 $13,499,672  $63,354  $13,563,026 
             

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]
  

June 30,

  

December 31,

 
  

2024

  

2023

 
         

Beginning of year

 $94,244,788  $118,218,389 

Additional investments in unconsolidated affiliates

  -   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 income (loss) of unconsolidated affiliates

  (7,214,228)  (7,888,765)
         

End of period

 $82,712,770  $94,244,788 
Equity Method Investments [Table Text Block]
  

For the Three Months Ended

  

For the Six Months Ended

 
  

June 30,

  

June 30,

 
  

2024

  

2023

  

2024

  

2023

 
                 

Revenue

 $4,709,014  $3,397,876  $8,304,406  $7,046,638 

Gross profit

  3,963,714   2,626,275   6,608,463   5,643,331 

Net loss from operations

  (5,110,583)  (4,582,600)  (10,159,290)  (9,448,410)

Net income (loss)

  3,977,046   (1,461,670)  (17,013,532)  (7,447,438)