Leases (Schedule Of Measurement Of Lease Liabilities) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Leases [Abstract]
Operating cash flows from operating leases	$ 152	$ 123
Weighted-average remaining lease term (years)	12 years 9 months 18 days	13 years 8 months 12 days
Weighted-average discount rate	3.53%	3.54%