Costs Associated with Exit and Restructuring Activities - Restructuring Reserve Activity (Details) - April 2014 Plan and June 2016 Plan [Member] $ in Thousands	9 Months Ended
	Sep. 30, 2019 USD ($)
Restructuring reserve activity
Restructuring liability at beginning	$ 1,586
Restructuring and restructuring-related charges	5,337
Cost paid	(3,534)
Restructuring liability at ending	1,778
Restructuring Reserve, Translation and Other Adjustment	$ (1,611)