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Property, Plant and Equipment (Details 1) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2011
Components of Railcar assets leased to others
Railcar assets leased to others	$ 335,037	$ 272,883	$ 256,219
Less accumulated depreciation	82,335	75,746	72,873
Railcar assets leased to others, net	$ 252,702	$ 197,137	$ 183,346

The amount of accumulated depreciation, by major property class, recorded on property subject to or available for lease as of the balance sheet date.

The gross amount of lessor property subject to or available for lease as of the balance sheet date.

The amount of property, by major property class, net of accumulated depreciation, subject to or available for lease as of the balance sheet date.