Supplemental Balance Sheet and Income Statement Information - Other Expense (Income) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Other expense (income)
Losses (gains) on sales, disposals and involuntary conversions of long-lived assets	$ 3,633	$ 2,240
Transaction related costs		7,044
Litigation expenses and reserves	7,132	3,600
Foreign currency transaction losses (gains)	8,573	2,503
(Gain) loss on debt buyback	(2,667)
Other losses (gains)	831	(1,298)
Other expense (income)	$ 17,502	$ 14,089