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Note 2 - Securities (Tables)
12 Months Ended
Dec. 31, 2021
Notes Tables  
Schedule of Available-for-sale and Held-to-maturity Reconciliation [Table Text Block]
  

2021

 
  Amortized Cost  Gross Unrealized Gains  Gross Unrealized (Losses)  Fair Value 

Securities available for sale:

                

U.S. Treasury securities

 $39,871  $37  $(250) $39,658 

U.S. agency and mortgage-backed securities

  177,131   1,085   (1,837)  176,379 

Obligations of states and political subdivisions

  71,037   910   (509)  71,438 

Corporate debt securities

  2,019   1      2,020 

Total securities available for sale

 $290,058  $2,033  $(2,596) $289,495 

Securities held to maturity:

                

U.S. agency and mortgage-backed securities

 $26,392  $124  $(53) $26,463 

Obligations of states and political subdivisions

  7,049   118   (13)  7,154 

Total securities held to maturity

 $33,441  $242  $(66) $33,617 

Total securities

 $323,499  $2,275  $(2,662) $323,112 
  

2020

 
  Amortized Cost  Gross Unrealized Gains  Gross Unrealized (Losses)  Fair Value 

Securities available for sale:

                

U.S. agency and mortgage-backed securities

 $98,848  $2,830  $(80) $101,598 

Obligations of states and political subdivisions

  37,507   1,122   (2)  38,627 

Total securities available for sale

 $136,355  $3,952  $(82) $140,225 

Securities held to maturity:

                

U.S. agency and mortgage-backed securities

 $9,588  $264  $  $9,852 

Obligations of states and political subdivisions

  3,146   140      3,286 

Corporate debt securities

  1,500   105      1,605 

Total securities held to maturity

 $14,234  $509  $  $14,743 

Total securities

 $150,589  $4,461  $(82) $154,968 
Schedule of Temporary Impairment Losses, Investments [Table Text Block]
  

2021

 
  

Less than 12 months

  

12 months or more

  

Total

 
  

Fair Value

  Unrealized (Loss)  

Fair Value

  Unrealized (Loss)  

Fair Value

  Unrealized (Loss) 

Securities available for sale:

                        

U.S. Treasury securities

 $29,656  $(250) $  $  $29,656  $(250)

U.S. agency and mortgage-backed securities

  109,950   (1,335)  14,749   (502)  124,699   (1,837)

Obligations of states and political subdivisions

  34,611   (500)  1,009   (9)  35,620   (509)

Total securities available for sale

 $174,217  $(2,085) $15,758  $(511) $189,975  $(2,596)

Securities held to maturity:

                        

U.S. agency and mortgage-backed securities

 $5,411  $(53) $  $  $5,411  $(53)

Obligations of states and political subdivisions

  999   (13)        999   (13)

Total securities held to maturity

 $6,410  $(66) $  $  $6,410  $(66)

Total securities

 $180,627  $(2,151) $15,758  $(511) $196,385  $(2,662)
  

2020

 
  

Less than 12 months

  

12 months or more

  

Total

 
  

Fair Value

  Unrealized (Loss)  

Fair Value

  Unrealized (Loss)  

Fair Value

  Unrealized (Loss) 

Securities available for sale:

                        

U.S. agency and mortgage-backed securities

 $17,367  $(80) $  $  $17,367  $(80)

Obligations of states and political subdivisions

  1,020   (2)        1,020   (2)

Total securities available for sale

 $18,387  $(82) $  $  $18,387  $(82)
Investments Classified by Contractual Maturity Date [Table Text Block]
  

Available for Sale

  

Held to Maturity

 
  Amortized Cost  Fair Value  Amortized Cost  Fair Value 

Due within one year

 $765  $766  $2,410  $2,412 

Due after one year through five years

  37,128   37,119   2,332   2,415 

Due after five years through ten years

  65,837   66,087   6,288   6,362 

Due after ten years

  186,328   185,523   22,411   22,428 
  $290,058  $289,495  $33,441  $33,617 
Marketable Securities [Table Text Block]
  

2021

  

2020

 

Federal Home Loan Bank stock

 $701  $818 

Federal Reserve Bank stock

  980   980 

Community Bankers’ Bank stock

  132   77 
  $1,813  $1,875