Quarterly report pursuant to Section 13 or 15(d)

Earnings/ (Loss) Per Share - Schedule of Calculation of Basic and Diluted Earnings (Loss) Per Common Share (Details)

v3.10.0.1
Earnings/ (Loss) Per Share - Schedule of Calculation of Basic and Diluted Earnings (Loss) Per Common Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Earnings Per Share, Basic and Diluted [Abstract]        
Net income (loss) $ 46,260 $ (1,297) $ 109,983 $ 56,317
Less portion allocated to nonvested shares 1,860   4,489 2,349
Net income (loss) allocated to common shares $ 44,400 $ (1,297) $ 105,494 $ 53,968
Weighted average common shares outstanding 138,972 137,575 138,917 137,547
Basic and diluted earnings (loss) per common share $ 0.32 $ (0.01) $ 0.76 $ 0.39
Shares excluded due to being anti-dilutive (weighted-average)   7,709