Annual report pursuant to Section 13 and 15(d)

Selected Quarterly Financial Data (Unaudited) (Details)

v3.3.1.900
Selected Quarterly Financial Data (Unaudited) (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]                      
Revenues $ 190,319 $ 230,569 $ 112,270 $ 176,317 $ 267,697 $ 170,804 $ 114,736 $ 118,029 $ 709,475 $ 671,266 $ 262,753
Income (loss) from operations (812,282) (529,076) (21,644) 28,773 129,458 53,454 18,110 25,109 (1,334,229) 226,131 55,463
Income tax (benefit) expense recorded (36,663) (216,603) (17,214) 14,479 67,757 4,876 31,461 49,247 (256,001) 153,341 98,136
Net income (loss) $ (830,869) $ (388,209) $ (31,325) $ 25,519 $ 110,073 $ 6,920 $ 47,852 $ 82,558 $ (1,224,884) $ 247,403 $ 153,192
Basic (in USD per share) $ (7.67) $ (3.59) $ (0.32) $ 0.30 $ 1.29 $ 0.08 $ 0.56 $ 0.97 $ (12.27) $ 2.90 $ 1.98
Diluted (in USD per share) $ (7.67) $ (3.59) $ (0.32) $ 0.30 $ 1.28 $ 0.08 $ 0.56 $ 0.96 $ (12.27) $ 2.88 $ 1.97