Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2014

Property, Plant and Equipment [Abstract]

Components of property, plant and equipment

The components of property, plant and equipment are as follows:

	December 31,
(in thousands)	2014		2013
Land	$	23,380	$	21,801
Land improvements and leasehold improvements	71,817		67,153
Buildings and storage facilities	275,059		231,976
Machinery and equipment	333,559		308,215
Software	55,436		13,351
Construction in progress	29,620		48,135
	788,871		690,631
Less: accumulated depreciation and amortization	335,264		303,173
	$	453,607	$	387,458

Components of Railcar assets leased to others

The components of the Rail Group assets leased to others are as follows:

	December 31,
(in thousands)	2014		2013
Rail Group assets leased to others	$	384,958	$	317,750
Less: accumulated depreciation	87,211		77,129
	$	297,747	$	240,621