Geographic Information (Geographical Distribution Of Net Sales) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated	$ 63,933	$ 56,058	$ 58,697
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
United States	44,840	39,912	40,108
Germany [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Foreign country	1,986	1,979	2,517
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Foreign country	2,790	1,745	3,531
Switzerland [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Foreign country	1,134	1,122	764
Singapore [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Foreign country	3,326	715	1,367
France [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Foreign country	1,480	1,424	1,625
Japan [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Foreign country	1,205	1,473	1,810
United Kingdom [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Foreign country	2,210	1,480	799
Turkey [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Foreign country	495	766	401
Hong Kong [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Foreign country	573	1,026	757
Vietnam [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Foreign country	1,219	1,110	1,330
All Other Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Foreign country	$ 2,675	$ 3,306	$ 3,688