Income Taxes (Reconciliation Of Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Income Taxes [Abstract]
Balance at January 1	$ 288	$ 312
Additions for tax positions taken related to the current year	128	80
Additions for tax positions taken related to prior years	66
Reductions for tax positions taken related to prior years		(8)
Lapse of statue of limitations	(23)
Settlements		(96)
Balance at December 31	$ 459	$ 288