Inventories (Schedule Of Inventories) (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Inventory [Line Items]
Raw materials	$ 8,023	$ 8,986
Work-in process	2,882	2,342
Finished products and components	3,651	3,144
Total	14,556	14,472
Domestic [Member]
Inventory [Line Items]
Raw materials	5,888	6,514
Work-in process	2,310	1,706
Finished products and components	3,153	2,801
Total	11,351	11,021
Foreign [Member]
Inventory [Line Items]
Raw materials	2,135	2,472
Work-in process	572	636
Finished products and components	498	343
Total	$ 3,205	$ 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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