Inventories (Schedule Of Inventories) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Inventory [Line Items]
Raw materials	$ 6,101	$ 5,662
Work-in process	2,061	2,015
Finished products and components	1,944	1,723
Total	10,106	9,400
Domestic Inventories [Member]
Inventory [Line Items]
Raw materials	4,082	3,548
Work-in process	1,410	1,173
Finished products and components	1,729	1,604
Total	7,221	6,325
Foreign Inventories [Member]
Inventory [Line Items]
Raw materials	2,019	2,114
Work-in process	651	842
Finished products and components	215	119
Total	$ 2,885	$ 3,075