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Investments (Tables)
 3 Months Ended
Mar. 31, 2022
Schedule of Investments [Abstract]  
Schedule of Available-for-sale Securities

A summary of investment securities available-for-sale is as follows:

 

   As of March 31, 2022 
       Gross   Gross     
   Amortized   unrealized   unrealized   Estimated 
(Dollars in thousands)  cost   gains   losses   fair value 
                 
U. S. treasury securities  $123,615   $-   $(3,733)  $119,882 
U. S. federal agency obligations   17,118    24    (129)   17,013 
                     
Municipal obligations, tax exempt   131,565    780    (1,430)   130,915 
Municipal obligations, taxable   46,733    305    (1,452)   45,586 
Agency mortgage-backed securities   161,753    15    (8,181)   153,587 
Total available-for-sale  $480,784   $1,124   $(14,925)  $466,983 

 

   As of December 31, 2021 
       Gross   Gross     
   Amortized   unrealized   unrealized   Estimated 
(Dollars in thousands)  cost   gains   losses   fair value 
                 
U. S. treasury securities  $43,098   $-   $(423)  $42,675 
U. S. federal agency obligations   17,165    67    (37)   17,195 
Municipal obligations, tax exempt   133,558    4,488    (62)   137,984 
Municipal obligations, taxable   39,011    1,171    (136)   40,046 
Agency mortgage-backed securities   142,747    1,339    (1,269)   142,817 
Total available-for-sale  $375,579   $7,065   $(1,927)  $380,717 
Schedule of Available for Sale Securities Continuous Unrealized Loss Position Fair Value

 

       As of March 31, 2022 
(Dollars in thousands)      Less than 12 months   12 months or longer   Total 
   No. of   Fair   Unrealized   Fair   Unrealized   Fair   Unrealized 
   securities   value   losses   value   losses   value   losses 
U.S. treasury securities   62   $116,916   $(3,733)  $-   $-   $116,916   $(3,733)
U.S. federal agency obligations   6    8,009    (24)   6,975    (105)   14,984    (129)
Municipal obligations, tax exempt   136    52,582    (1,325)   2,290    (105)   54,872    (1,430)
Municipal obligations, taxable   29    19,465    (1,183)   3,310    (269)   22,775    (1,452)
Agency mortgage-backed securities   87    140,395    (7,387)   10,559    (794)   150,954    (8,181)
Total   320   $337,367   $(13,652)  $23,134   $(1,273)  $360,501   $(14,925)

 

       As of December 31, 2021 
(Dollars in thousands)      Less than 12 months   12 months or longer   Total 
   No. of   Fair   Unrealized   Fair   Unrealized   Fair   Unrealized 
   securities   value   losses   value   losses   value   losses 
U.S. treasury securities   28   $42,675   $(423)  $-   $-   $42,675   $(423)
U.S. federal agency obligations   6    12,073    (30)   3,048    (7)   15,121    (37)
Municipal obligations, tax exempt   37    12,411    (46)   1,879    (16)   14,290    (62)
Municipal obligations, taxable   13    8,802    (136)   -    -    8,802    (136)
Agency mortgage-backed securities   28    95,028    (1,269)   -    -    95,028    (1,269)
Total   112    170,989    (1,904)   4,927    (23)   175,916    (1,927)
Schedule of Investments Classified by Contractual Maturity Date

 

(Dollars in thousands)  Amortized   Estimated 
   cost   fair value 
Due in less than one year  $23,783   $23,720 
Due after one year but within five years   337,479    325,866 
Due after five years but within ten years   76,120    74,127 
Due after ten years   43,402    43,270 
Total  $480,784   $466,983 
Schedule of Realized Gain (loss)

Sales proceeds and gross realized gains and losses on sales of available-for-sale securities were as follows for the periods indicated:

 

   2022   2021 
(Dollars in thousands)  Three months ended March 31, 
   2022   2021 
         
Sales proceeds  $-   $13,346 
           
Realized gains  $-   $1,075 
Realized losses   -    - 
Net realized gains  $-   $1,075