v3.26.1
Note 3 - U.S. Treasury Securities, Available-for-sale (Tables)
6 Months Ended
Jun. 30, 2026
Notes Tables  
Schedule of Available-for-Sale Securities Reconciliation [Table Text Block]

(in thousands)

                
      

Gross

  

Gross

     
  

Amortized

  

Unrealized

  

Unrealized

  

Fair

 
  

Cost

  

Gains

  

Losses

  

Value

 

June 30, 2026

                

U.S. Treasury Note, 4.125%, 10/31/2026 Maturity

 $20,032  $-  $(20) $20,012 

U.S. Treasury Note, 4.50%, 5/15/2027 Maturity

  65,818   -   (92)  65,726 

U.S. Treasury Note, 0.50%, 4/30/2027 Maturity

  97,150   -   (26)  97,124 
  $183,000  $-  $(138) $182,862 

December 31, 2025

                

U.S. Treasury Note, 4.625%, 6/30/2026 Maturity

 $100,136  $395  $-  $100,531 

U.S. Treasury Note, 0.75%, 5/31/2026 Maturity

  34,579  $23     $34,602 
  $134,715  $418  $-  $135,133