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Commitments And Contingencies (Tables)
 9 Months Ended
Sep. 30, 2020
Commitments and Contingencies Disclosure [Abstract]  
Summary of the Total Unfunded, or Off-Balance Sheet, Credit Extension Commitments
A summary of the total unfunded, or off-balance sheet, credit extension commitments follows:
Dollars in thousandsSeptember 30,
2020
Commitments to extend credit: 
Revolving home equity and credit card lines$88,214 
Construction loans110,896 
Other loans320,318 
Standby letters of credit11,200 
Total$530,628