Restructuring - Restructuring Charges by Segment (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 1,213	$ 436	$ 1,045
Distribution [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	764	194	727
Material Handling [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	449	225	0
Corporate [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0	17	318
Cost of Sales [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	189	178	0
Cost of Sales [Member] | Distribution [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0	0	0
Cost of Sales [Member] | Material Handling [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	189	178	0
Cost of Sales [Member] | Corporate [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0	0	0
Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	1,024	258	1,045
Selling, General and Administrative Expenses [Member] | Distribution [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	764	194	727
Selling, General and Administrative Expenses [Member] | Material Handling [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	260	47	0
Selling, General and Administrative Expenses [Member] | Corporate [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 0	$ 17	$ 318