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Note 6 - Derivative Financial Instruments (Tables)
9 Months Ended
Sep. 30, 2025
Notes Tables  
Schedule of Derivative Instruments [Table Text Block]
  

As of September 30, 2025

  

As of December 31, 2024

 
  

Notional

  

Fair Value of Assets

  

Fair Value of Liabilities

  

Notional

  

Fair Value of Assets

  

Fair Value of Liabilities

 

Cash flow hedges:

                        

Interest rate swaps

 $600,000  $7,821  $690  $500,000  $20,328  $ 

Interest rate collars

  200,000   4,052      200,000   8,972    

Forward interest rate swap

  150,000      47          

Total

 $950,000  $11,873  $737  $700,000  $29,300  $