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Commitments and Contingencies (Tables)
 9 Months Ended
Sep. 30, 2021
Commitments and Contingencies [Abstract]  
Financial Instruments whose Contract Amounts Represent Credit Risk
The following financial instruments whose contract amounts represent credit risk were outstanding at September 30, 2021 and December 31, 2020:

   
September 30,
    
December 31,
  
(dollars in thousands)
  
2021
    
2020
  
Commitments to extend credit:
            
Home equity lines of credit
  
$
70,168
    
$
66,999
  
Commercial real estate, construction and development loans committed but not funded
    
48,386
      
20,258
  
Other lines of credit (principally commercial)
    
66,671
      
64,329
  
Total
  
$
185,225
    
$
151,586
  
                 
Letters of credit
  
$
3,568
    
$
4,841