Property, Plant and Equipment (Details Textual) (USD $) In Millions, unless otherwise specified	1 Months Ended	6 Months Ended		12 Months Ended
	Dec. 31, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Property, Plant and Equipment [Abstract]
Depreciation expense on property, plant and equipment		$ 20.4	$ 18.5	$ 37.5
Asset Impairment Charges	4.4
Depreciation expense on railcar assets leased to others		$ 6.9	$ 7.4	$ 14.7