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Loan Servicing (Tables)
12 Months Ended
Dec. 31, 2020
Banking and Thrift, Other Disclosures [Abstract]  
Schedule Of Unpaid Balance Of Loan Service The unpaid balances are as follows for December 31, 2020, 2019 and 2018.  The amount of capitalized servicing assets is considered immaterial.
202020192018
Mortgage loan portfolios serviced for:
Federal Home Loan Mortgage Corporation$514,539 $354,393 $351,672 
Fannie Mae69,072 82,922 92,552 
Federal Home Loan Bank51,479 76,815 88,931 
Chevy Chase Mortgage Company 134 164 231 
Total$635,224 $514,294 $533,386