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Loans And Allowance For Loan Losses (Investment In Impaired Loans) (Details) - USD ($)
$ in Thousands
Mar. 31, 2018
Dec. 31, 2017
Loans And Allowance For Loan Losses [Abstract]    
Non-accrual loans $ 10,277 $ 11,983
Restructured loans (accruing) 93,250 102,812
Total impaired loans $ 103,527 $ 114,795