Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2015

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)	2015		2014
Land	$	29,928	$	23,380
Land improvements and leasehold improvements	77,191		71,817
Buildings and storage facilities	303,482		275,059
Machinery and equipment	375,028		333,559
Construction in progress	32,871		29,620
	818,500		733,435
Less: accumulated depreciation	363,240		321,959
	$	455,260	$	411,476

Components of Railcar assets leased to others

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

	December 31,
(in thousands)	2015		2014
Rail Group assets leased to others	$	434,051	$	384,958
Less: accumulated depreciation	95,940		87,211
	$	338,111	$	297,747