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Note 2 - Securities (Tables)
12 Months Ended
Dec. 31, 2024
Notes Tables  
Debt Securities, Available-for-Sale [Table Text Block]
  

(Dollars in thousands)

 
      

Gross

  

Gross

  

Estimated

 
  

Cost

  

Unrealized

  

Unrealized

  

Fair

 
  

Basis

  

Gains

  

Losses

  

Value

 

December 31, 2024

                

US government sponsored entities

 $8,884  $-  $(823) $8,061 

Collateralized mortgage obligations and residential mortgage-backed securities

  135,974   -   (26,649)  109,325 

Municipal securities

  262,954   -   (48,205)  214,749 

Collateralized debt obligations

  2,156   -   (737)  1,419 

Total securities available-for-sale

 $409,968  $-  $(76,414) $333,554 
  

(Dollars in thousands)

 
      

Gross

  

Gross

  

Estimated

 
  

Cost

  

Unrealized

  

Unrealized

  

Fair

 
  

Basis

  

Gains

  

Losses

  

Value

 

December 31, 2023

                

US government sponsored entities

 $8,884  $-  $(1,001) $7,883 

Collateralized mortgage obligations and residential mortgage-backed securities

  149,410   -   (25,946)  123,464 

Municipal securities

  278,813   60   (40,203)  238,670 

Collateralized debt obligations

  2,170   -   (813)  1,357 

Total securities available-for-sale

 $439,277  $60  $(67,963) $371,374 
Investments Classified by Contractual Maturity Date [Table Text Block]
  

(Dollars in thousands)

 
  

Available-for-sale

 
      

Estimated

 
  

Cost

  

Fair

 

December 31, 2024

 

Basis

  

Value

 

Due in one year or less

 $-  $- 

Due from one to five years

  11,953   10,801 

Due from five to ten years

  32,560   28,835 

Due over ten years

  229,481   184,593 

Collateralized mortgage obligations and residential mortgage-backed securities

  135,974   109,325 

Total

 $409,968  $333,554 
Schedule of Realized Gain (Loss) [Table Text Block]
  

(Dollars in thousands)

 
  

December 31,

  

December 31,

 
  

2024

  

2023

 
         

Proceeds

 $14,697  $476 

Gross gains

  -   - 

Gross losses

  (531)  (48)
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
  

(Dollars in thousands)

 
  

Unrealized
loss

 

Ending balance, December 31, 2023

 $(51,613)

Current period change

  (6,471)

Ending balance, December 31, 2024

 $(58,084)
  

(Dollars in thousands)

 
  

Unrealized
gain (loss)

 

Ending balance, December 31, 2022

 $(64,300)

Period change

  12,687 

Ending balance, December 31, 2023

 $(51,613)
Unrealized Gain (Loss) on Investments [Table Text Block]
  

(Dollars in thousands)

     
  

Less than 12 months

  

12 months or longer

  

Total

     
  

Estimated

      

Estimated

      

Estimated

      

Percentage of

 
  

Fair

  

Unrealized

  

Fair

  

Unrealized

  

Fair

  

Unrealized

  

Total Portfolio

 
  

Value

  

Losses

  

Value

  

Losses

  

Value

  

Losses

  

in Loss Position

 

December 31, 2024

                            

US government sponsored entities

 $-  $-  $8,061  $(823) $8,061  $(823)  100.0%

Collateralized mortgage obligations and residential mortgage-backed securities

  -   -   109,325   (26,649)  109,325   (26,649)  100.0 

Municipal securities

  3,310   (156)  211,439   (48,049)  214,749   (48,205)  100.0 

Collateralized debt obligations

  -   -   1,419   (737)  1,419   (737)  100.0 

Total securities balance

 $3,310  $(156) $330,244  $(76,258) $333,554  $(76,414)  100.0%

Number of securities

      4       409       413     
  

(Dollars in thousands)

     
  

Less than 12 months

  

12 months or longer

  

Total

     
  

Estimated

      

Estimated

      

Estimated

      

Percentage of

 
  

Fair

  

Unrealized

  

Fair

  

Unrealized

  

Fair

  

Unrealized

  

Total Portfolio

 
  

Value

  

Losses

  

Value

  

Losses

  

Value

  

Losses

  

in Loss Position

 

December 31, 2023

                            

US government sponsored entities

 $-  $-  $7,883  $(1,001) $7,883  $(1,001)  100.0%

Collateralized mortgage obligations and residential mortgage-backed securities

  -   -   123,464   (25,946)  123,464   (25,946)  100.0 

Municipal securities

  -   -   229,595   (40,203)  229,595   (40,203)  96.2 

Collateralized debt obligations

  -   -   1,357   (813)  1,357   (813)  100.0 

Total securities balance

 $-  $-  $362,299  $(67,963) $362,299  $(67,963)  97.6%

Number of securities

      -       434       434