Annual report pursuant to Section 13 and 15(d)

Earnings Per Share (Details)

v3.6.0.2
Earnings Per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]                      
Net income (loss) $ 341,403 $ 117,786 $ (16,981) $ (88,930) $ 210,707 $ (34,790) $ 221,501 $ 94,793 $ 353,278 $ 492,210 $ 167,139
Weighted average number of shares of common shares outstanding                 345,046,993 363,055,228 364,181,059
Weighted average restricted stock shares                 3,026,711 2,192,510 1,830,796
Basic and diluted weighted average shares outstanding 347,643,257 347,627,226 347,597,955 349,436,015 360,090,432 367,365,973 367,074,131 366,507,657 348,073,704 365,247,738 366,011,855
Basic and diluted earnings per weighted average common share $ 0.98 $ 0.34 $ (0.05) $ (0.25) $ 0.59 $ (0.09) $ 0.60 $ 0.26 $ 1.01 $ 1.35 $ 0.46