Quarterly report pursuant to Section 13 or 15(d)

Net Loss Per Share - Schedule of Earnings Per Share, Basic and Diluted (Detail)

v3.8.0.1
Net Loss Per Share - Schedule of Earnings Per Share, Basic and Diluted (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Earnings Per Share [Abstract]        
Net loss $ (22,864) $ (44,405) $ (196,736) $ (67,875)
Basic and diluted weighted average shares outstanding 192,405 120,128 186,143 83,979
Loss per share:        
Basic and diluted $ (0.12) $ (0.37) $ (1.06) $ (0.81)