Other (Income) Expense (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Component of Other Expense, Nonoperating, Name [Domain]
Component of Operating Other Cost and Expense [Line Items]
Other Nonoperating Income (Expense)	$ (338)	$ (4,121)	$ (919)
Gains (Losses) on Sales of Assets [Member]
Component of Operating Other Cost and Expense [Line Items]
Other Nonoperating Income (Expense)	(909)	(201)	(487)
Income (Loss) from Equity Method Investments [Member]
Component of Operating Other Cost and Expense [Line Items]
Other Nonoperating Income (Expense)	(177)	(646)	(274)
Foreign Currency Gain (Loss) [Member]
Component of Operating Other Cost and Expense [Line Items]
Other Nonoperating Income (Expense)	4,339	142	1,800
Interest Income [Member]
Component of Operating Other Cost and Expense [Line Items]
Other Nonoperating Income (Expense)	(776)	(319)	(138)
Rents And Royalties Income Loss [Member]
Component of Operating Other Cost and Expense [Line Items]
Other Nonoperating Income (Expense)	(863)	(1,033)	(1,716)
gain loss on insurance recovery [Member]
Component of Operating Other Cost and Expense [Line Items]
Other Nonoperating Income (Expense)	(1,611)	(4,490)	(1,014)
Legal entity realignment [Member]
Component of Operating Other Cost and Expense [Line Items]
Other Nonoperating Income (Expense)	0	1,860	711
RegistrationExpenseEuronext [Member]
Component of Operating Other Cost and Expense [Line Items]
Other Nonoperating Income (Expense)	0	923	0
Other Operating Expense [Member]
Component of Operating Other Cost and Expense [Line Items]
Other Nonoperating Income (Expense)	(341)	(357)	199
Gainlossonbusinessinterruptioninsuranc [Member] | gain loss on insurance recovery [Member]
Component of Operating Other Cost and Expense [Line Items]
Other Nonoperating Income (Expense)		$ 4,400