Inventories And Warranties (Schedule Of Inventory Components) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Inventories And Warranties [Abstract]
Raw materials and purchased parts	$ 7,287	$ 8,152
Work in process	1,549	1,322
Finished goods	3,621	3,059
Total inventories	$ 12,457	$ 12,533