v3.26.1
Note J - Fair Value of Financial Instruments (Tables)
3 Months Ended
Mar. 31, 2026
Notes Tables  
Fair Value, Assets Measured on Recurring Basis [Table Text Block]
   

Total

   

Level 1

   

Level 2

   

Level 3

 
   

(in thousands)

 
                                 

Marketable equity securities

  $ 40,756     $ 40,756       -       -  
Fair Value, by Balance Sheet Grouping [Table Text Block]
   

Carrying

Value

   

Estimated

Fair Value

 
   

(in thousands)

 
                 

Long-term debt

  $ 320,651     $ 317,724