Employee Benefit Plans (Schedule Of Net Periodic Benefit Cost) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Retirement Benefits [Abstract]
Service cost	$ 273	$ 325
Interest cost	280	475
Expected return on plan assets	(592)	(861)
Amortization of net loss	297	288
Total	$ 258	$ 227