Property, Plant, Equiment and Railcars on Lease, net (Tables)

12 Months Ended

Dec. 31, 2013

Property, Plant and Equipment [Abstract]

Components of property, plant and equipment

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

	December 31,
	2013			2012
	(in thousands)
Operations/Corporate:
Buildings	$	155,937		$	151,545
Machinery and equipment	186,844			173,468
Land	3,335			3,335
Construction in process	14,487			12,156
	360,603			340,504
Less accumulated depreciation	(201,228		)	(184,611		)
Property, plant and equipment, net	$	159,375		$	155,893
Railcar Leasing:
Railcars on Lease	$	388,060		$	225,992
Less accumulated depreciation	(15,509		)	(5,710		)
Railcars on operating lease, net	$	372,551		$	220,282

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

As of December 31, 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):

2014	$	41,431
2015	40,686
2016	38,968
2017	30,620
2018	19,606
2019 and thereafter	33,561
Total	$	204,872

Schedule of depreciation expense

The following table summarizes depreciation expense:

	December 31,
	2013		2012		2011
	(in thousands)
Total depreciation expense	$	27,712	$	23,850	$	22,167
Depreciation expense on leased railcars	$	9,799	$	4,424	$	505