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
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Equity Method Investments and Joint Ventures [Abstract]        
Gross revenue $ 76,627 $ 100,979 $ 206,666 $ 364,669
Net (income) loss $ (35,212) $ 10,063 $ (9,344) $ (35,359)