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Accumulated Other Comprehensive Loss (Schedule Of Changes In Accumulated Other Comprehensive Loss) (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Accumulated Other Comprehensive Loss [Line Items]        
Balance $ 177,023,000 $ 159,590,000 $ 168,437,000 $ 155,374,000
Net current-period other comprehensive gain 158,000 277,000 394,000 330,000
Accumulated other comprehensive loss, end of period (1,409,000)   (1,409,000)  
Balance 179,291,000 164,003,000 179,291,000 164,003,000
Unrealized Gains and (Losses) on Available-for-Sale Securities [Member]        
Accumulated Other Comprehensive Loss [Line Items]        
Balance (1,567,000) (2,237,000) (1,803,000) (2,290,000)
Other comprehensive gain before reclassifications 158,000 277,000 394,000 330,000
Net current-period other comprehensive gain 158,000 277,000 394,000 330,000
Balance (1,409,000) (1,960,000) (1,409,000) (1,960,000)
Less amount reclassified from accumulated other comprehensive loss $ 0 $ 0 $ 0 $ 0