Leases (Schedule Of Assets Acquired Under Finance Leases) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Finance leases, Property and equipment, at cost	$ 7,161	$ 7,674
Finance leases, Accumulated amortization	(1,279)	882
Finance leases, property and equipment, net	$ 5,882	6,792
Equipment [Member]
Finance leases, Property and equipment, at cost		1,066
Finance leases, Accumulated amortization		375
Finance leases, property and equipment, net		691
Leasehold Improvements [Member]
Finance leases, Property and equipment, at cost		6,608
Finance leases, Accumulated amortization		507
Finance leases, property and equipment, net		$ 6,101