Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2017

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)	2017		2016
Land	$	22,388	$	30,672
Land improvements and leasehold improvements	69,127		79,631
Buildings and storage facilities	284,820		322,856
Machinery and equipment	373,127		392,418
Construction in progress	7,502		12,784
	756,964		838,361
Less: accumulated depreciation	372,287		388,309
	$	384,677	$	450,052

Components of Railcar assets leased to others

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

	December 31,
(in thousands)	2017		2016
Rail Group assets leased to others	$	531,391	$	431,571
Less: accumulated depreciation	107,948		104,376
	$	423,443	$	327,195