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Note 3 - Debt Securities (Tables)
6 Months Ended
Jun. 30, 2024
Notes Tables  
Schedule of Available-for-Sale Securities Reconciliation [Table Text Block]
  

June 30, 2024

 
  

Amortized

  

Unrealized

  

Unrealized

  

Fair

 
  

Cost

  

Gains

  

Losses

  

Value

 

(Amounts in thousands)

                

U.S. Treasury securities

 $10,784  $-  $(13) $10,771 

Municipal securities

  15,951   2   (263)  15,690 

Corporate notes

  28,583   -   (1,601)  26,982 

Agency mortgage-backed securities

  90,304   -   (14,061)  76,243 

Total

 $145,622  $2  $(15,938) $129,686 
  

December 31, 2023

 
  

Amortized

  

Unrealized

  

Unrealized

  

Fair

 
  

Cost

  

Gains

  

Losses

  

Value

 

(Amounts in thousands)

                

U.S. Agency securities

 $5,750  $-  $(1) $5,749 

U.S. Treasury securities

  146,653   16   (843)  145,826 

Municipal securities

  19,528   11   (162)  19,377 

Corporate notes

  28,566   -   (1,485)  27,081 

Agency mortgage-backed securities

  94,548   2   (11,622)  82,928 

Total

 $295,045  $29  $(14,113) $280,961 
Investments Classified by Contractual Maturity Date [Table Text Block]
  

June 30, 2024

 
  

Amortized

     

(Amounts in thousands)

 

Cost

  

Fair Value

 

Available-for-sale debt securities

        

Due within one year

 $15,364  $15,321 

Due after one year but within five years

  39,954   38,122 

Due after five years but within ten years

  -   - 
   55,318   53,443 

Agency mortgage-backed securities

  90,304   76,243 

Total debt securities available-for-sale

 $145,622  $129,686 
Gain (Loss) on Securities [Table Text Block]
  

June 30, 2024

 
  

Less than 12 Months

  

12 Months or Longer

  

Total

 
  

Fair

  

Unrealized

  

Fair

  

Unrealized

  

Fair

  

Unrealized

 
  

Value

  

Losses

  

Value

  

Losses

  

Value

  

Losses

 

(Amounts in thousands)

                        

U.S. Treasury securities

 $10,771  $(13) $-  $-  $10,771  $(13)

Municipal securities

  6,204   (39)  7,401   (224)  13,605   (263)

Corporate notes

  -   -   26,982   (1,601)  26,982   (1,601)

Agency mortgage-backed securities

  4,332   (83)  71,910   (13,978)  76,242   (14,061)

Total

 $21,307  $(135) $106,293  $(15,803) $127,600  $(15,938)
  

December 31, 2023

 
  

Less than 12 Months

  

12 Months or Longer

  

Total

 
  

Fair

  

Unrealized

  

Fair

  

Unrealized

  

Fair

  

Unrealized

 
  

Value

  

Losses

  

Value

  

Losses

  

Value

  

Losses

 

(Amounts in thousands)

                        

U.S. Agency securities

 $5,749  $(1) $  $  $5,749  $(1)

U.S. Treasury securities

  11,417   (14)  129,108   (829)  140,525   (843)

Municipal securities

  4,742   (20)  5,484   (142)  10,226   (162)

Corporate notes

        27,081   (1,485)  27,081   (1,485)

Agency mortgage-backed securities

  3,421   (10)  78,319   (11,612)  81,740   (11,622)

Total

 $25,329  $(45) $239,992  $(14,068) $265,321  $(14,113)
Realized Gain (Loss) on Investments [Table Text Block]
  

Three Months Ended

  

Six Months Ended

 
  

June 30,

  

June 30,

 
  

2024

  

2023

  

2024

  

2023

 

(Amounts in thousands)

                

Gross realized gains

 $-  $-  $-  $7 

Gross realized losses

  -   (28)  -   (28)

Net gain (loss) on sale of securities

 $-  $(28) $-  $(21)