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Accumulated Other Comprehensive Loss (Schedule Of Changes In Accumulated Other Comprehensive Loss) (Details) - USD ($)
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Accumulated Other Comprehensive Loss [Line Items]    
Balance $ 168,437,000 $ 155,374,000
Net current-period other comprehensive gain 78,000 9,000
Accumulated other comprehensive loss, end of period (1,725,000)  
Balance 172,682,000 157,999,000
Unrealized Gains and (Losses) on Available-for-Sale Securities [Member]    
Accumulated Other Comprehensive Loss [Line Items]    
Balance (1,803,000) (2,290,000)
Other comprehensive gain before reclassifications 78,000 9,000
Net current-period other comprehensive gain 78,000 9,000
Balance (1,725,000) (2,281,000)
Less amount reclassified from accumulated other comprehensive loss $ 0 $ 0