Property, Plant and Equipment and Railcars on Leases, net (Tables)

3 Months Ended

Mar. 31, 2017

Property, Plant and Equipment [Abstract]

Components of property, plant and equipment

The following table summarizes depreciation expense:

	Three Months Ended
	March 31,
	2017		2016
	(in thousands)
Total depreciation expense	$	13,873	$	12,655
Depreciation expense on leased railcars	$	8,237	$	7,375

The following table summarizes the components of property, plant, equipment and railcars on leases, net:

	March 31, 2017			December 31, 2016
	(in thousands)
Operations / Corporate:
Buildings	$	183,086		$	182,970
Machinery and equipment	232,035			232,171
Land	4,329			4,328
Construction in process	3,463			1,966
	422,913			421,435
Less accumulated depreciation	(249,844		)	(244,384		)
Property, plant and equipment, net	$	173,069		$	177,051
Railcar Leasing:
Railcars on lease	$	1,052,266		$	996,422
Less accumulated depreciation	(96,644		)	(88,412		)
Railcars on lease, net	$	955,622		$	908,010

Summary of future contractual minimum rental revenues required under non-cancellable operating leases for railcars

As of March 31, 2017, future contractual minimum rental revenues required under non-cancellable operating leases for railcars with terms longer than one year are as follows (in thousands):

Remaining 9 months of 2017	$	94,790
2018	116,668
2019	97,354
2020	61,192
2021	44,793
2022 and thereafter	69,598
Total	$	484,395