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Acquisitions and Dispositions - Summary of Pro Forma Financial Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2016
Business Acquisition Pro Forma Information [Abstract]    
Revenues $ 110,166 $ 559,099
Net loss $ (338,213) $ (412,921)
Loss per share:    
Basic $ (1.39) $ (1.69)
Diluted $ (1.39) $ (1.69)