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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] - Fair Value, Measurements, Recurring [Member] - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Beginning balance $ 15,871 $ 17,192
Total losses realized/unrealized: Included in other comprehensive income loss (1,757) 127
Ending balance $ 14,114 $ 17,319