Geographic Information (Geographical Distribution Of Net Sales) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 16,602	$ 17,310
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	12,582	12,822
Switzerland [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	629	332
Germany [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	528	591
Vietnam [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	437	364
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	434	699
Japan [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	371	322
UK [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	282	523
Turkey [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	264	193
France [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	241	534
Hong Kong [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	195	178
Singapore [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	85	111
All Other Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 554	$ 641