Segment Reporting Schedule of Property, Plant, and Equipment from External Customers by Geographical Regions (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	$ 44,327	$ 47,086
Percentage of long lived assets attributable to countries outside of the U.S.	19.00%
North America
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	35,953	37,133
Europe Middle East And Africa
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	2,048	2,104
Latam
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	997	1,192
Asia Pac
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	$ 5,329	$ 6,657