Inventories (Schedule Of Inventories) (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Inventory [Line Items]
Raw materials	$ 7,524	$ 8,986
Work-in process	2,147	2,342
Finished products and components	3,658	3,144
Total	13,329	14,472
United States [Member]
Inventory [Line Items]
Raw materials	5,847	6,514
Work-in process	1,627	1,706
Finished products and components	2,992	2,801
Total	10,466	11,021
Foreign [Member]
Inventory [Line Items]
Raw materials	1,677	2,472
Work-in process	520	636
Finished products and components	666	343
Total	$ 2,863	$ 3,451

Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.

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