Property, Plant and Equipment (Tables)

6 Months Ended

Jun. 30, 2013

Property, Plant and Equipment [Abstract]

Components of property, plant and equipment

The following table summarizes the components of property, plant and equipment.

	June 30, 2013			December 31, 2012
	(in thousands)
Operations / Corporate:
Buildings	$	155,308		$	151,545
Machinery and equipment	178,722			173,468
Land	3,335			3,335
Construction in process	12,773			12,156
	350,138			340,504
Less accumulated depreciation	(192,810		)	(184,611		)
Property, plant and equipment, net	$	157,328		$	155,893
Railcar Leasing:
Railcars on lease	$	306,869		$	225,992
Less accumulated depreciation	(10,125		)	(5,710		)
Railcars on operating lease, net	$	296,744		$	220,282

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

As of June 30, 2013, 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 6 months of 2013	$	15,516
2014	29,409
2015	28,735
2016	27,946
2017	20,837
2018	12,579
2019 and thereafter	23,970
Total	$	158,992

Schedule of depreciation expense

The following table summarizes depreciation expense.

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2013		2012		2013		2012
	(in thousands)
Total depreciation expense	$	6,860	$	5,884	$	13,395	$	11,286
Depreciation expense on leased railcars	$	2,300	$	945	$	4,415	$	1,422