Pension and Other Postretirement Benefit Plans Schedule of Amounts Recognized in Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Other Assets, Noncurrent	$ 43,607	$ 43,509
Deferred Tax Assets, Net	32,604	22,685
Other Liabilities, Noncurrent	48,853	43,879
Accumulated Other Comprehensive Income (Loss), Net of Tax	(10,538)	(11,894)
Foreign Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Deferred Tax Assets, Net	2,660	2,953
Other Liabilities, Noncurrent	9,643	11,810
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (9,540)	$ (10,812)