Management Actions (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Restructuring Cost and Reserve [Line Items]
Approximate time anticipated savings will offset the restructuring charge		1 year
Restructuring Reserve [Roll Forward]
Restructuring Charges, net of noncash expenses			$ 9,558
Cash Payments		$ (2,123)	(6,312)
Foreign currency adjustments		97	(190)
Restructuring Reserve ending balance		2,248	3,436
Selling and Administrative Expenses
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 8,018	1,032	2,501
Restructuring Costs and Asset Impairment Charges	961
Restructuring Reserve [Roll Forward]
Restructuring Charges	$ 8,018	$ 1,032	$ 2,501