Goodwill And Intangible Assets (Summary Of Changes In Carrying Amount Of Goodwill) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2017 USD ($)
Goodwill And Intangible Assets [Abstract]
Balance at beginning of the period	$ 20,599
Goodwill aquired during the year	3,204
Effects of changes in foreign currency exchange rates	1,153	[1]
Balance at ending of the period	$ 24,956

[1] Represents the impact of foreign currency translation for instances when goodwill is recorded in foreign entities whose functional currency is also their local currency. Goodwill balances are translated into U.S. dollars using exchange rates in effect at period end. Adjustments related to foreign currency translation are included in other comprehensive income.