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Note 2 - Investments in Bond Securities (Tables)
12 Months Ended
Dec. 31, 2024
Notes Tables  
Debt Securities, Held-to-Maturity [Table Text Block]
  

December 31,

  

December 31,

 
  

2024

  

2023

 
  

(in thousands)

 

Amortized cost

 $2,687  $3,135 

Unrealized gains

  5   4 

Fair value

 $2,692  $3,139 
Investments Classified by Contractual Maturity Date [Table Text Block]
  

December 31, 2024

  

December 31, 2023

 
      

(in thousands)

     
  

Amortized

Cost

  

Fair Value

  

Amortized

Cost

  

Fair Value

 

One year or less

 $2,687  $2,692  $2,671  $2,671 

Greater than one year through five years

  -   -   464   468 
  $2,687  $2,692  $3,135  $3,139