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Property, Plant and Equipment (Details 1) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Jun. 30, 2013
Components of Railcar assets leased to others      
Railcar assets leased to others $ 323,881 $ 317,750 $ 321,269
Less: accumulated depreciation 81,734 77,129 78,382
Railcar assets leased to others, net $ 242,147 $ 240,621 $ 242,887