Restructuring Restructuring Related Balance Sheet Activity (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Restructuring Cost and Reserve [Line Items]
Beginning balance, January 1, 2016	$ 29,581
Costs charged to expense	2,237	$ (5,181)
Cash payments	(5,511)
Non-cash items	(1,114)
Effect of change in exchange rates	262
Ending balance, March 31, 2016	25,455
Accrued Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance, January 1, 2016	26,533
Costs charged to expense	1,027
Cash payments	(5,323)
Non-cash items	0
Effect of change in exchange rates	352
Ending balance, March 31, 2016	22,589
Asset Impairment and Net (Gain) Loss on Sale or Disposal [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance, January 1, 2016	0
Costs charged to expense	1,114
Cash payments	0
Non-cash items	(1,114)
Effect of change in exchange rates	0
Ending balance, March 31, 2016	0
Other Accrued Costs [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance, January 1, 2016	3,048
Costs charged to expense	96
Cash payments	(188)
Non-cash items	0
Effect of change in exchange rates	(90)
Ending balance, March 31, 2016	$ 2,866