Property, Plant and Equipment (Tables)

9 Months Ended

Sep. 30, 2013

Property, Plant and Equipment [Abstract]

Components of property, plant and equipment

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

(in thousands)	September 30, 2013		December 31, 2012		September 30, 2012
Land	$	23,348	$	22,258	$	19,699
Land improvements and leasehold improvements	67,262		63,013		59,375
Buildings and storage facilities	224,913		214,919		178,354
Machinery and equipment	299,874		287,896		257,926
Software	13,558		12,901		12,632
Construction in progress	54,713		34,965		28,582
	683,668		635,952		556,568
Less accumulated depreciation and amortization	303,294		277,074		273,174
	$	380,374	$	358,878	$	283,394

Components of railcar assets leased to others

The components of Railcar assets leased to others are as follows:

(in thousands)	September 30, 2013		December 31, 2012		September 30, 2012
Railcar assets leased to others	$	309,360	$	310,614	$	335,037
Less accumulated depreciation	76,336		82,284		82,335
	$	233,024	$	228,330	$	252,702