(Loss) Income Per Common Share - Basic Weighted Average Common Shares Outstanding to Diluted Weighted Average Common Shares Outstanding (Detail) - shares shares in Thousands |
3 Months Ended | 6 Months Ended | ||
---|---|---|---|---|
Jun. 30, 2018 |
Jun. 30, 2017 |
Jun. 30, 2018 |
Jun. 30, 2017 |
|
Earnings Per Share [Abstract] | ||||
Weighted average common shares outstanding -basic | 245,880 | 245,177 | 245,795 | 244,916 |
Effect of dilutive securities: | ||||
Director and employee PSUs and RSUs | 0 | 158 | 0 | 326 |
Weighted average common shares outstanding – diluted | 245,880 | 245,335 | 245,795 | 245,242 |