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Investments in Equity Method Affiliates (Summarized Data Of Equity Method Investees) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Dec. 31, 2012
Investments in Equity Method Affiliates [Abstract]          
Total Assets $ 388,316   $ 388,316   $ 279,874
Liabilities 153,899   153,899   96,981
Equity attributable to the investees 234,317   234,317   182,277
Non-controlling interest 100   100   616
Liabilities & Equity 388,316   388,316   279,874
Net income / (loss) 17,496 9,313 26,431 (419)  
Net income / (loss) attributable to the investees $ 17,456 $ 9,201 $ 26,947 $ (253)