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Pension (Schedule Of Net Periodic Pension Costs) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Dec. 31, 2018
Pension [Abstract]          
Service cost $ 81 $ 90 $ 161 $ 180  
Interest cost 157 138 315 276  
Expected return on plan assets (272) (279) (542) (558)  
Recognized net actuarial loss 134 176 286 352  
Net period cost $ 100 $ 125 $ 220 $ 250 $ 500