Restructuring - Restructuring Charges by Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Restructuring Cost And Reserve [Line Items]
Restructuring charges	$ 0	$ 901
Cost of Sales [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges	0	0
SG&A [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges	0	901
Distribution [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges	0	901
Distribution [Member] | Cost of Sales [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges	0	0
Distribution [Member] | SG&A [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges	0	901
Material Handling [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges	0	0
Material Handling [Member] | Cost of Sales [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges	0	0
Material Handling [Member] | SG&A [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges	$ 0	$ 0