v3.10.0.1
Earnings Per Common Share - Reconciliation of Numerators and Denominators of Basic and Diluted Earnings Per Share (Detail) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Earnings Per Share [Abstract]        
Net loss $ (9,072) $ (8,896) $ (16,518) $ (149,664)
Weighted average shares – basic 94,470,636 86,340,634 94,548,898 78,418,977
Weighted average shares – diluted 94,470,636 86,340,634 94,548,898 78,418,977
Basic $ (0.10) $ (0.10) $ (0.17) $ (1.91)
Diluted $ (0.10) $ (0.10) $ (0.17) $ (1.91)