Property, Plant and Equipment (Tables)

6 Months Ended

Jun. 30, 2014

Property, Plant and Equipment [Abstract]

Components of property, plant and equipment

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

(in thousands)	June 30, 2014		December 31, 2013		June 30, 2013
Land	$	22,055	$	21,801	$	22,637
Land improvements and leasehold improvements	68,003		67,153		65,625
Buildings and storage facilities	234,745		231,976		224,281
Machinery and equipment	314,427		308,215		295,723
Software	55,710		13,351		13,469
Construction in progress	18,362		48,135		44,146
	713,302		690,631		665,881
Less: accumulated depreciation and amortization	322,715		303,173		294,165
	$	390,587	$	387,458	$	371,716

Components of railcar assets leased to others

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

(in thousands)	June 30, 2014		December 31, 2013		June 30, 2013
Railcar assets leased to others	$	323,881	$	317,750	$	321,269
Less: accumulated depreciation	81,734		77,129		78,382
	$	242,147	$	240,621	$	242,887