Geographic Information (Geographical Distribution Of Net Sales) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 18,258	$ 16,602
USA [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	11,924	12,452
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	3,297	1,840
Asia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	2,868	2,012
All Other Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 169	$ 298