Other Financial Statement Data (Schedule Of Inventory Components) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Other Financial Statement Data [Abstract]
Raw materials and purchased parts	$ 8,152	$ 6,893
Work in process	1,322	1,007
Finished goods	3,059	3,152
Total inventories	$ 12,533	$ 11,052