v3.25.2
Note 3 - Securities (Tables)
6 Months Ended
Jun. 30, 2025
Notes Tables  
Schedule of Available-for-Sale Securities Reconciliation [Table Text Block]
  

Amortized Cost

  

Gross Unrealized Gains

  

Gross Unrealized Losses

  

Fair Value

 

Available-for-Sale Securities

                

June 30, 2025

                

Municipal securities

 $702  $4  $  $706 

U.S. Treasury Bills and Notes

  432,879   70   (216)  432,733 

Mortgage-backed securities - residential

  2,755   36   (55)  2,736 

Collateralized mortgage obligations - residential

  801      (11)  790 
  $437,137  $110  $(282) $436,965 

December 31, 2024

                

Municipal securities

 $703  $3  $  $706 

U.S. Treasury Bills and Notes

  246,876   103   (689)  246,290 

U.S. government-sponsored agencies

  109,900   1   (128)  109,773 

Mortgage-backed securities - residential

  2,949   31   (69)  2,911 

Collateralized mortgage obligations - residential

  862      (12)  850 
  $361,290  $138  $(898) $360,530 
Investments Classified by Contractual Maturity Date [Table Text Block]
  

June 30, 2025

 
  

Amortized Cost

  

Fair Value

 

Due in one year or less

 $419,986  $419,890 

Due after one year through five years

  13,595   13,549 
   433,581   433,439 

Mortgage-backed securities - residential

  2,755   2,736 

Collateralized mortgage obligations - residential

  801   790 
  $437,137  $436,965 
Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block]
  

Less than 12 Months

  

12 Months or More

  

Total

 
  

Count

  

Fair Value

  

Unrealized Loss

  

Count

  

Fair Value

  

Unrealized Loss

  

Count

  

Fair Value

  

Unrealized Loss

 

June 30, 2025

                                    

U.S. Treasury Bills and Notes

  22  $218,088  $(41)  37  $16,292  $(175)  59  $234,380  $(216)

Mortgage-backed securities - residential

           5   1,146   (55)  5   1,146   (55)

Collateralized mortgage obligations - residential

           5   790   (11)  5   790   (11)
   22  $218,088  $(41)  47  $18,228  $(241)  69  $236,316  $(282)
                                     

December 31, 2024

                                    

U.S. Treasury Bills and Notes

    $  $   73  $48,609  $(689)  73  $48,609  $(689)

U.S. government-sponsored agencies

  10   79,872   (128)           10   79,872   (128)

Mortgage-backed securities - residential

           7   1,364   (69)  7   1,364   (69)

Collateralized mortgage obligations - residential

           5   850   (12)  5   850   (12)
   10  $79,872  $(128)  85  $50,823  $(770)  95  $130,695  $(898)