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Commitments And Contingencies (Tables)
 9 Months Ended
Sep. 30, 2021
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,
2021
Commitments to extend credit: 
Revolving home equity and credit card lines$95,601 
Construction loans198,224 
Other loans333,636 
Standby letters of credit25,025 
Total$652,486