Comprehensive Income (Schedule Of Changes In The Composition Of Accumulated Other Comprehensive Income (Loss)) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Comprehensive Income [Abstract]
Cumulative Translation Adjustment, Beginning Balance	$ 2,430	$ 137	$ 54
Foreign currency translation adjustment, net of tax	625	2,293	83
Cumulative Translation Adjustment, Ending Balance	3,055	2,430	137
Gains (Losses) and foreign currency translation on AFS securities, Beginning Balance	(86)	(70)	(34)
Gains (Losses) and foreign currency translation on AFS securities	19	(16)	(36)
Gains (Losses) and foreign currency translation on AFS securities, Ending Balance	(67)	(86)	(70)
Unrealized losses on available for sale securities, Beginning Balance			2
Available for sale securities, other comprehensive (loss)			(2)
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance	2,344	67	22
Accumulated other comprehensive income, other comprehensive income (loss)	644	2,277	45
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance	$ 2,988	$ 2,344	$ 67