v3.8.0.1
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
Mar. 31, 2018
Mar. 31, 2017
Earnings Per Share [Abstract]    
Net loss – basic $ (7,446) $ (140,768)
Weighted average shares – basic 94,516,280 70,409,303
Weighted average shares – diluted 94,516,280 70,409,303
Basic $ (0.08) $ (2.00)
Diluted $ (0.08) $ (2.00)