Segment Information Segment Information - Long Lived Assets by Geographical Area (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	$ 130,114	$ 141,208
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	62,186	69,241
The Netherlands
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	37,367	36,428
United Kingdom
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	15,523	19,732
France
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	13,133	13,358
Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	$ 1,905	$ 2,449