Restructuring Related Balance Sheet Activity (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Restructuring Cost and Reserve [Line Items]
Beginning balance, January 1, 2020	$ 56,107
Costs charged to expense	(248)	$ 7,262
Cash (payments) receipts	(3,253)
Net assets disposed and impaired	(1,357)
Effect of change in exchange rates	(487)
Ending balance, March 31, 2020	50,762
Accrued Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance, January 1, 2020	53,741
Costs charged to expense	(517)
Cash (payments) receipts	(4,319)
Net assets disposed and impaired	0
Effect of change in exchange rates	487
Ending balance, March 31, 2020	48,418
Asset Impairment and Net (Gain) Loss on Sale or Disposal [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance, January 1, 2020	0
Costs charged to expense	(955)
Cash (payments) receipts	2,312
Net assets disposed and impaired	1,357
Effect of change in exchange rates	0
Ending balance, March 31, 2020	0
Other Accrued Costs [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance, January 1, 2020	2,366
Costs charged to expense	1,224
Cash (payments) receipts	(1,246)
Net assets disposed and impaired	0
Effect of change in exchange rates	0
Ending balance, March 31, 2020	$ 2,344