Quarterly report pursuant to Section 13 or 15(d)

Equity Investments (Equity Investment Income Statement Disclosure) (Details)

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Equity Investments (Equity Investment Income Statement Disclosure) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Equity Method Investments and Joint Ventures [Abstract]        
Gross revenue $ 247,525 $ 105,684 $ 625,819 $ 244,118
Net income (loss) $ 35,212 $ 19,869 $ 242,816 $ 35,211