Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2016

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)	2016		2015
Land	$	30,672	$	29,928
Land improvements and leasehold improvements	79,631		77,191
Buildings and storage facilities	322,856		303,482
Machinery and equipment	392,418		375,028
Construction in progress	12,784		32,871
	838,361		818,500
Less: accumulated depreciation	388,309		363,240
	$	450,052	$	455,260

Components of Railcar assets leased to others

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

	December 31,
(in thousands)	2016		2015
Rail Group assets leased to others	$	431,571	$	434,051
Less: accumulated depreciation	104,376		95,940
	$	327,195	$	338,111