Geographic Information (Geographical Distribution Of Net Sales) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 17,120	$ 17,507	$ 33,722	$ 34,817
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	11,948	13,018	24,400	25,840
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	1,568	1,608	3,408	3,823
Asia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	3,217	2,549	5,229	4,341
All Other Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 387	$ 332	$ 685	$ 813