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Note D - Marketable Equity Securities (Tables)
3 Months Ended
Mar. 31, 2024
Notes Tables  
Marketable Securities [Table Text Block]
  

March 31, 2024

  

December 31, 2023

 
  

(in thousands)

 

Fair market value

 $45,789  $43,203 

Cost

  30,294   30,294 

Unrealized gain

 $15,495  $12,909 
Unrealized Gain (Loss) on Investments [Table Text Block]
  

March 31, 2024

  

December 31, 2023

 
  

(in thousands)

 

Gross unrealized gains

 $18,098  $15,539 

Gross unrealized losses

  2,603   2,630 

Net unrealized gain

 $15,495  $12,909