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 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Earnings Per Share, Basic and Diluted [Abstract]        
Net income $ 36,083 $ 33,315 $ 63,723 $ 57,614
Less portion allocated to nonvested shares 1,474 1,374 2,621 2,442
Net income allocated to common shares $ 34,609 $ 31,941 $ 61,102 $ 55,172
Weighted average common shares outstanding 138,929 137,552 138,892 137,533
Basic and diluted earnings per common share $ 0.25 $ 0.23 $ 0.44 $ 0.40