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Accumulated Other Comprehensive Income (Summary Of Changes In Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning balance $ (256)  
Other comprehensive loss (57,097) $ (5,375)
Ending balance (57,353) (256)
Unrealized gains and losses on available-for-sale securities [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning balance (1,453) 4,096
Other comprehensive income (loss) before reclassification (56,476) (5,476)
Amount reclassified from accumulated other comprehensive (income) loss (2) (73)
Other comprehensive loss (56,478) (5,549)
Ending balance (57,931) (1,453)
Unrealized gain (loss) on pension liability [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning balance 1,197 1,023
Other comprehensive income (loss) before reclassification (619) 174
Other comprehensive loss (619) 174
Ending balance 578 1,197
Accumulated Other Comprehensive Income (Loss) [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning balance (256) 5,119
Other comprehensive income (loss) before reclassification (57,095) (5,302)
Amount reclassified from accumulated other comprehensive (income) loss (2) (73)
Other comprehensive loss (57,097) (5,375)
Ending balance $ (57,353) $ (256)