Goodwill And Intangible Assets (Summary Of Changes In Carrying Amount Of Goodwill) (Details) $ in Thousands		6 Months Ended
		Jun. 30, 2015 USD ($)
Goodwill And Intangible Assets [Line Items]
Beginning Balance		$ 17,010
Effects of changes in foreign currency exchange rates	[1]	147
Ending Balance		17,157
United States [Member] | License Fees And Services [Member]
Goodwill And Intangible Assets [Line Items]
Beginning Balance		$ 1,097
Effects of changes in foreign currency exchange rates
Ending Balance		$ 1,097
United Kingdom [Member] | License Fees And Services [Member]
Goodwill And Intangible Assets [Line Items]
Beginning Balance		7,118
Effects of changes in foreign currency exchange rates	[1]	66
Ending Balance		7,184
United Kingdom [Member] | Customer Support [Member]
Goodwill And Intangible Assets [Line Items]
Beginning Balance		8,795
Effects of changes in foreign currency exchange rates	[1]	81
Ending Balance		$ 8,876

[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.