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Securities (Tables)
 3 Months Ended
Mar. 31, 2023
Securities [Abstract]  
Amortized Cost and Fair Value, with Gross Unrealized Gains and Losses of Securities Available-for-Sale
Amortized costs and fair values, with gross unrealized gains and losses, of securities available-for-sale as of the dates indicated were as follows:

   
March 31, 2023
  
           Gross    
Gross
        
     Amortized      Unrealized      Unrealized      Fair  
(Dollars in thousands)
  
Cost
    
Gains
    
(Losses)
    
Value
  
U.S. Treasury securities
  
$
8,013
    
$
-
    
$
(265
)
  
$
7,748
  
Obligations of U.S. Government agencies
    
40,680
      
24
      
(963
)
    
39,741
  
Obligations of state and political subdivisions
    
70,351
      
-
      
(9,698
)
    
60,653
  
Mortgage-backed securities
    
98,554
      
-
      
(9,858
)
    
88,696
  
Money market investments
    
1,661
      
-
      
-
      
1,661
  
Corporate bonds and other securities
    
27,990
      
-
      
(2,576
)
    
25,414
  
   
$
247,249
    
$
24
    
$
(23,360
)
  
$
223,913
  

   
December 31, 2022
  
           Gross      Gross        
 
Amortized
      Unrealized      Unrealized      Fair  
(Dollars in thousands)
  
Cost
    
Gains
    
(Losses)
    
Value
  
U.S. Treasury securities
  
$
8,013
    
$
-
    
$
(342
)
  
$
7,671
  
Obligations of U.S. Government agencies
    
43,622
      
10
      
(1,233
)
    
42,399
  
Obligations of state and political subdivisions
    
70,491
      
-
      
(11,107
)
    
59,384
  
Mortgage-backed securities
    
99,874
      
-
      
(10,961
)
    
88,913
  
Money market investments
    
1,816
      
-
      
-
      
1,816
  
Corporate bonds and other securities
    
27,990
      
-
      
(2,655
)
    
25,335
  
   
$
251,806
    
$
10
    
$
(26,298
)
  
$
225,518
  
Amortized Cost and Fair Value of Securities by Contractual Maturity
The amortized cost and fair value of securities by contractual maturity are shown below.

   
March 31, 2023
  
     Amortized      Fair  
(Dollars in thousands)
  
Cost
    
Value
  
Due in one year or less
  
$
1,460
    
$
1,427
  
Due after one year through five years
    
19,519
      
18,758
  
Due after five through ten years
    
64,982
      
57,497
  
Due after ten years
    
159,627
      
144,570
  
Other securities, restricted
    
1,661
      
1,661
  
   
$
247,249
    
$
223,913
  
Available-for-Sale Securities, Continuous Unrealized Loss Position
The following tables show the gross unrealized losses and fair value of the Company’s investments with unrealized losses for which an allowance for credit losses has not been recorded as of March 31, 2023 and that are deemed to be temporarily impaired as of December 31, 2022, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position as of the dates indicated:

   
March 31, 2023
  

 
Less than 12 months
    
12 months or more
    
Total
  

   Gross    
     Gross          
Gross
        

   Unrealized      Fair      Unrealized      Fair      Unrealized      Fair  
(Dollars in thousands)
   Losses      Value     Losses     Value      Losses      Value  
U.S. Treasury securities
   $ 20     $ 3,902     $
245     $ 3,846     $ 265     $ 7,748  
Obligations of U.S. Government agencies
    
53
      
7,558
      
910
      
26,736
      
963
      
34,294
  
Obligations of state and political subdivisions
    
381
      
7,247
      
9,317
      
53,406
      
9,698
      
60,653
  
Mortgage-backed securities
    
817
      
22,700
      
9,041
      
65,996
      
9,858
      
88,696
  
Corporate bonds and other securities
    
249
      
4,991
      
2,327
      
19,423
      
2,576
      
24,414
  
Total securities available-for-sale
  
$
1,520
    
$
46,398
    
$
21,840
    
$
169,407
    
$
23,360
    
$
215,805
  

   
December 31, 2022
  

 
Less than 12 months
    
12 months or more
    
Total
  
     Gross            Gross            Gross        
     Unrealized      Fair      Unrealized      Fair      Unrealized      Fair  
(Dollars in thousands)
  
Losses
    
Value
    
Losses
    
Value
    
Losses
    
Value
  
U.S. Treasury securities   $ 342     $ 7,671     $ -     $ -     $ 342     $ 7,671  
Obligations of U.S. Government agencies
    
258
      
13,873
      
975
      
22,851
      
1,233
      
36,724
  
Obligations of state and political subdivisions
     5,386       33,720       5,721       23,856       11,107       57,576  
Mortgage-backed securities
    
4,157
      
52,717
      
6,804
      
36,196
      
10,961
      
88,913
  
Corporate bonds and other securities
    
1,084
      
12,906
      
1,571
      
11,429
      
2,655
      
24,335
  
Total securities available-for-sale
  
$
11,227
    
$
120,887
    
$
15,071
    
$
94,332
    
$
26,298
    
$
215,219