v3.26.1
Note 3 - Investments and Restricted Investments (Tables)
 6 Months Ended
Jun. 30, 2026
Notes Tables  
Schedule of Available for Sale Securities, and Held to Maturity [Table Text Block]
  

June 30, 2026

 
  

Amortized Cost

  

Gross Unrealized Gains

  

Gross Unrealized Losses

  

Estimated Fair Value

 
Securities available-for-sale:                
Restricted investments - U.S. Treasuries $-  $-  $-  $- 
Total securities available-for-sale $-  $-  $-  $- 
                 

Securities held-to-maturity:

                
Restricted investments - U.S. Treasuries  42,863   188   (387)  42,664 
Total securities held-to-maturity $42,863  $188  $(387) $42,664 
  

December 31, 2025

 
  

Amortized Cost

  

Gross Unrealized Gains

  

Gross Unrealized Losses

  

Estimated Fair Value

 
Securities available-for-sale:                
Restricted investments - U.S. Treasuries $-  $-  $-  $- 
Total securities available-for-sale $-  $-  $-  $- 
                 

Securities held-to-maturity:

                
Restricted investments - U.S. Treasuries  11,453   55   -   11,508 
Total securities held-to-maturity $11,453  $55  $-  $11,508 
Investments Classified by Contractual Maturity Date [Table Text Block]
  

Securities Available-for-Sale

  Securities Held-to-Maturity 

Due within one year

 $-  $20,439 

Due one year through five years

  -   22,424 

Total

 $-  $42,863