Pension and Other Postretirement Benefit Plans Schedule of Amounts Recognized in Balance Sheet (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Other Assets, Noncurrent	$ 28,909	$ 24,360
Deferred Tax Assets, Net	21,248	24,145
Other Liabilities, Noncurrent	39,171	33,300
Accumulated Other Comprehensive Income (Loss), Net of Tax	(8,413)	(1,739)
Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Other Assets, Noncurrent	0	286
Deferred Tax Assets, Net	268	1,200
Other Liabilities, Noncurrent	8,783	0
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (8,413)	$ (1,739)