Segment Information Property, Plant, and Equipment By Location (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant, and equipment, net	$ 207,789	$ 246,820
UNITED STATES
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant, and equipment, net	76,130	87,954
Outside United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant, and equipment, net	$ 131,659	$ 158,866