Restructuring - Summary of Charges for Restructuring Plans (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Restructuring Cost And Reserve [Line Items]
Restructuring charges	$ 0	$ 0	$ 0	$ 865,000
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	865,000
Distribution [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges			0	865,000
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	865,000
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