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Condensed Consolidated Statement of Operations (Unaudited) (Parenthetical) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Income Statement [Abstract]        
General and administrative expenses, equity-based compensation $ 2,635 $ 1,828 $ 9,887 $ 5,434
Unrealized gains (losses) on derivative instruments $ (7,302) $ (10,297) $ (17,626) $ 1,731