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Condensed Consolidated Statements of Operations (Unaudited) (Parenthetical) (USD $)
In Thousands
3 Months Ended9 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Sep. 30, 2011
Sep. 30, 2010
Revenues:    
Revenues from affiliates included in manufacturing operations$ 0$ 19,274$ 1,221$ 65,401
Revenues from affiliates included in Railcar services6,9164,26319,04910,283
Cost of revenues:    
Selling, administrative and other costs related to party145154436462
Interest income from related parties7177172,1111,938
Other income from a related party$ 4$ 4$ 11$ 12