Leases (Components Of Lease Cost) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019
Leases [Abstract]
Operating lease cost	$ 662	$ 1,969
Variable lease cost	104	345
Short-term lease cost		3
Total lease expense	$ 766	$ 2,317