Property, Plant and Equipment (Tables)

9 Months Ended

Sep. 30, 2016

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, 2016		December 31, 2015		September 30, 2015
Land	$	28,473	$	29,928	$	30,285
Land improvements and leasehold improvements	82,908		77,191		76,414
Buildings and storage facilities	319,950		303,482		301,125
Machinery and equipment	393,178		375,028		368,338
Construction in progress	21,284		32,871		21,044
	845,793		818,500		797,206
Less: accumulated depreciation	385,546		363,240		354,884
	$	460,247	$	455,260	$	442,322

Components of railcar assets leased to others

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

(in thousands)	September 30, 2016		December 31, 2015		September 30, 2015
Rail Group assets leased to others	$	438,211	$	434,051	$	441,267
Less: accumulated depreciation	103,810		95,940		94,167
	$	334,401	$	338,111	$	347,100