Segment Information (Schedule Of Interest Income, By Geographical Areas) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Schedule Of Interest Income By Major Geographic Areas [Line Items]
Interest income	$ 716	$ 1,319	$ 1,391
Americas [Member]
Schedule Of Interest Income By Major Geographic Areas [Line Items]
Interest income	177	408	588
Europe [Member]
Schedule Of Interest Income By Major Geographic Areas [Line Items]
Interest income	432	771	699
East Asia [Member]
Schedule Of Interest Income By Major Geographic Areas [Line Items]
Interest income	23	23	14
Emerging Asia [Member]
Schedule Of Interest Income By Major Geographic Areas [Line Items]
Interest income	$ 84	$ 117	$ 90