Restructuring - Additional Information (Details)	12 Months Ended
	Dec. 31, 2015 USD ($) facility	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Jul. 31, 2013 facility
Restructuring Cost And Reserve [Line Items]
Number of manufacturing plants | facility				2
Restructuring Charges	$ 2,411,000	$ 1,213,000	$ 436,000
Restructuring reserve	$ 0	0
Material Handling
Restructuring Cost And Reserve [Line Items]
Number of manufacturing plants | facility	2
Restructuring Charges	$ 2,252,000	449,000	225,000
Distribution
Restructuring Cost And Reserve [Line Items]
Restructuring Charges	124,000	764,000	194,000
Severance and Moving Expenses for Equipment and Inventory | Material Handling
Restructuring Cost And Reserve [Line Items]
Restructuring Charges	$ 2,300,000
Severance and Non-Cancelable Lease Costs | Distribution
Restructuring Cost And Reserve [Line Items]
Restructuring Charges		800,000	200,000
Finance and Sales Reorganization | Material Handling
Restructuring Cost And Reserve [Line Items]
Restructuring Charges		$ 400,000
Severance | Material Handling
Restructuring Cost And Reserve [Line Items]
Restructuring Charges			$ 200,000