Segment Information Property, Plant, and Equipment By Location (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant, and equipment, net	$ 246,820	$ 255,212	$ 262,670
UNITED STATES
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant, and equipment, net	87,954	98,389	107,153
Outside United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant, and equipment, net	$ 158,866	$ 156,823	$ 155,517