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)

v3.8.0.1
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, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Earnings Per Share, Basic and Diluted [Abstract]        
Net income (loss) $ (1,297) $ 45,928 $ 56,317 $ (265,503)
Less portion allocated to nonvested shares   1,689 2,349  
Net income (loss) allocated to common shares $ (1,297) $ 44,239 $ 53,968 $ (265,503)
Weighted average common shares outstanding 137,575 92,243 137,547 81,748
Basic and diluted earnings (loss) per common share $ (0.01) $ 0.48 $ 0.39 $ (3.25)
Shares excluded due to being anti-dilutive (weighted-average) 7,709     3,833