Property, Plant and Equipment (Tables)

6 Months Ended

Jun. 30, 2020

Property, Plant and Equipment [Abstract]

Components of property, plant and equipment

The components of Property, plant and equipment, net are as follows:

(in thousands)	June 30, 2020		December 31, 2019		June 30, 2019
Land	$	40,188	$	40,442	$	39,241
Land improvements and leasehold improvements	96,028		103,148		84,127
Buildings and storage facilities	377,652		373,961		327,418
Machinery and equipment	881,144		835,156		514,030
Construction in progress	35,982		59,993		164,532
	1,430,994		1,412,700		1,129,348
Less: accumulated depreciation	524,977		474,282		433,521
Property, plant and equipment, net	$	906,017	$	938,418	$	695,827

Components of railcar assets leased to others

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

(in thousands)	June 30, 2020		December 31, 2019		June 30, 2019
Rail Group assets leased to others	$	742,107	$	723,004	$	688,320
Less: accumulated depreciation	149,286		138,706		128,609
Rail Group assets, net	$	592,821	$	584,298	$	559,711