Fair Value of Financial Instruments (Reconciliation Of Fair Valued Assets Measured On A Recurring Basis) (Details) - Fair Value, Inputs, Level 3 [Member] - Collateralized debt obligations [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	$ 14,354	$ 15,277
Total losses realized/unrealized: Included in other comprehensive income	(1,094)	(923)
Ending balance	$ 13,260	$ 14,354