Fair Value of Financial Instruments (Reconciliation Of Fair Valued Assets Measured On A Recurring Basis) (Details) - Fair Value, Inputs, Level 3 [Member] - Fair Value, Measurements, Recurring [Member] - Collateralized debt obligations [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	$ 12,380	$ 15,152	$ 14,354	$ 15,277
Total losses realized/unrealized: Included in other comprehensive income			(2,402)	(405)
Ending balance	11,952	14,872	$ 11,952	$ 14,872
Included in other comprehensive income (loss)	$ (428)	$ (280)