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Long Term Subordinated Notes (Schedule Of Interest Expense Incurred In Connection With Long Term Subordinated Notes) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Long Term Subordinated Notes [Abstract]        
Interest expense incurred $ 2,881 $ 2,875 $ 8,892 $ 7,968