General and Basis of Presentation - Restructuring Expenses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	$ 1,692	$ 1,209
Operating Segments | Europe & Africa
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	1,549	1,000
Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	$ 143	$ 209