Segment Information (Identifiable Assets) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Assets	$ 498,643	$ 469,457
Material Handling
Segment Reporting Information [Line Items]
Assets	249,146	240,897
Distribution
Segment Reporting Information [Line Items]
Assets	66,910	63,340
Corporate
Segment Reporting Information [Line Items]
Assets	45,889	4,652
Discontinued operations
Segment Reporting Information [Line Items]
Assets	$ 136,698	$ 160,568